Devices and methods for treating skin

ABSTRACT

According to some embodiments, a microdermabrasion device for treating skin comprises a handpiece assembly having a distal end and a proximal end. The handpiece assembly includes at least one delivery conduit and at least one waste conduit. The microdermabrasion device additionally comprises a tip configured to be positioned along the distal end of the handpiece assembly, wherein the tip is adapted to contact skin surface. In several embodiments, the tip comprises a lip, a first opening in fluid communication with the fluid delivery conduit and a second opening in fluid communication with the waste conduit. In one embodiment, the device includes one or more abrasive elements positioned along a distal end of the tip, wherein the abrasive elements are configured to selectively remove skin as the tip is moved relative to a skin surface.

RELATED APPLICATIONS AND INCORPORATION BY REFERENCE

This application is a continuation of U.S. patent application Ser. No.15/588,102 filed May 5, 2017, which is a is a continuation of U.S.patent application Ser. No. 14/455,762 filed Aug. 8, 2014 and issued onMay 9, 2017 as U.S. Pat. No. 9,642,997, which is a continuation of U.S.patent application Ser. No. 12/832,663 filed Jul. 8, 2010 and issued onAug. 26, 2014 as U.S. Pat. No. 8,814,836, which is acontinuation-in-part of U.S. patent application Ser. No. 12/362,353filed Jan. 29, 2009 and issued on Jun. 16, 2015 as U.S. Pat. No.9,056,193, which claims the priority benefit under 35 U.S.C. § 119(e) ofU.S. Provisional Patent Application No. 61/024,504 filed Jan. 29, 2008.U.S. patent application Ser. No. 12/362,353 also claims the prioritybenefit under 35 U.S.C. § 119(e) of U.S. Provisional Patent ApplicationNo. 61/224,044, filed Jul. 8, 2009, U.S. Provisional Patent ApplicationNo. 61/229,674, filed Jul. 29, 2009, and U.S. Provisional PatentApplication No. 61/254,152, filed Oct. 22, 2009. All of the foregoingapplication are hereby incorporated by reference and made a part of thepresent specification. In addition, the entirety of U.S. patentapplication Ser. No. 12/346,582, filed Dec. 30, 2008 and published onJul. 9, 2009 as U.S. Publication No. 2009/0177171, is herebyincorporated by reference herein and made a part of the presentspecification.

BACKGROUND Field

This application relates generally to skin treatment, and morespecifically, to apparatuses, systems and methods for treating aperson's skin.

Description of the Related Art

Abrasion of the outer layer or epidermis of the skin is desirable tosmooth or blend scars, blemishes or other skin conditions that may becaused by, for example, sun exposure, acne, other skin disorders, agingand/or the like. Standard techniques used to abrade the skin havegenerally been separated into two fields that are commonly referred toas dermabrasion and microdermabrasion. In both techniques, portions ofthe epidermis (e.g., the stratum corneum) are removed. As part of itsnormal regeneration function, the body then replaces the lost skincells, resulting in a new outer layer of skin. Additionally, despite themild edema and erythema associated with the procedures, the skineventually looks and feels smoother than prior to the treatment becauseof the new outer layer of skin.

Dermabrasion generally refers to a procedure in which the outer surfaceof the skin is removed due to mechanical rubbing by a handpiece with anabrasive element that is often in the form of a burr, wheel, disc or thelike. This process tends to be messy and painful, sometimesnecessitating the administration of a local anesthetic to the personbeing treated. In general, dermabrasion leaves the skin red andraw-looking. The removed skin can take several months to regrow andheal. Recent efforts have led to the use of lasers instead of abrasiveelements, resulting in less bleeding. However, the pain and messiness ofsuch procedures normally remain.

Efforts have been made to decrease the mess caused by the process waste,such as, for example, removed skin, blood, other debris and the like, byadding a suction element. As the process waste is drawn into the suctionopening, skin that has not been removed is also pulled against the gritsurrounding the suction opening, so the procedure remains relativelymessy due to the abrasion that takes place outside of the handpiece bythe grit.

In general, microdermabrasion refers generally to a procedure in whichthe surface of the skin is removed by mechanical rubbing using ahandpiece that can discharge a stream of sand or grit. For example, ahandpiece can be used to direct a fluid containing crystals of aluminumoxide, sodium chloride and/or sodium bicarbonate. The velocity andmomentum of the grit helps wear away cell layers of the skin with eachpass of the handpiece. Alternatively, new “crystal-free”microdermabrasion techniques utilize a diamond-tipped handpiece withouta stream of grit.

Efforts to add a suction element have been more successful inmicrodermabrasion than in dermabrasion, because the handpiece applyingthe stream of grit is more controllable to a localized area. That is, asthe removed skin is drawn into the suction opening, skin that has notbeen removed is also pulled towards the handpiece where it is treatedwith the grit stream, allowing for simultaneous local treatment andsuction.

Microdermabrasion typically removes moisture from the skin. Thus, theprocedure is generally followed by the application of moisturizingcreams, other agents and/or other materials. However, similar to topicalapplication of moisturizing creams prior to microdermabrasion, themoisturizing elements only work as deep as the active ingredients canpassively migrate through the remaining epidermis.

SUMMARY

According to some embodiments, a microdermabrasion device for treatingskin comprises a handpiece assembly having a distal end and a proximalend. The handpiece assembly includes at least one delivery conduit andat least one waste conduit. The microdermabrasion device additionallycomprises a tip configured to be positioned along the distal end of thehandpiece assembly, wherein the tip is adapted to contact skin surface.According to some embodiments, the microdermabrasion device furtherincludes a flow control device or feature included within the handpieceassembly to regulate the flow of fluids through the delivery conduit. Inseveral embodiments, the tip comprises a lip, a first opening in fluidcommunication with the fluid delivery conduit and a second opening influid communication with the waste conduit. In one embodiment, thedevice includes one or more abrasive elements positioned along a distalend of the tip, wherein the abrasive elements are configured toselectively remove skin as the tip is moved relative to a skin surface.In some embodiments, the first opening, the second opening and theabrasive elements of the tip are positioned within an interior of anouter periphery formed by the lip. In some embodiments, the wasteconduit is in fluid communication with a vacuum source to selectivelyremove debris away from the tip. In one embodiment, the delivery conduitis in fluid communication with the at least one waste conduit and thevacuum source when the lip contacts a skin surface. In some embodiments,the delivery conduit is configured to selectively deliver at least onetime-release material to the skin surface being treated.

According to some embodiments, the flow control device comprises a valve(e.g., a needle valve). In some embodiments, the abrasive elementcomprises a protruding member, a spiral ridge or an abrasive surface. Inother embodiments, the abrasive element comprises an abrasive disc, anabrasive surface and/or any other member that is configured to beseparated from the tip or that is configured to be permanently attachedto the tip. In one embodiment, the tip is removable from the handpieceassembly. In other embodiments, the time-release material comprises aplurality of microcapsules, capsules or other enclosures configured torelease their internal contents at various times following delivery tothe skin surface. In some embodiments, the time-release materialcomprises salicylic acid. In other embodiments, the time-releasematerial comprises one or more other active and/or non-activeingredients (e.g., azelaic acid, topical retinoids, benzoyl peroxide,topical antibiotics, other anti-acne materials, saline, other dilutantsor fluids, soaps, hardening agents, gels, other binders, lotions,moisturizers, peptides, amino acids, UVA and/or UVB sunblocks, othersunblocking agents, skin tightening agents, hyaluronic acid (HA), otherhydration agents, hair removal or hair growth suppression agents,medicaments and pharmaceuticals, etc.), either alone or in combinationwith one another.

In one embodiment, the time-release material is impregnated along atleast a portion of the tip. In other embodiments, the time-releasematerial is initially contained within a cartridge or other containerthat is in fluid communication with the delivery conduit when thecartridge or other container is secured to the handpiece assembly. Inother embodiments, the time release material is delivered to the tip ofthe handpiece without any prior dilution or premixing. In someembodiments, the handpiece assembly comprises a recess configured toremovably receive a cartridge, wherein an internal content of thecartridge is placed in fluid communication with the delivery conduitwhen the cartridge is secured within the recess of the handpieceassembly. In some embodiments, the cartridge or container comprises amovable piston therein, wherein the movable piston configured to urge aninternal content of the cartridge toward an outlet of the cartridge. Insome embodiments, the cartridge or container comprises an airless pumpdesign or configuration. In one embodiment, the time-release material isconfigured to treat a skin disorder or condition (e.g., acne, oily ordry skin, etc.).

According to certain arrangements, a device for treating a skin surfaceincludes a handpiece assembly having a distal end and a proximal endsuch that the handpiece assembly comprises at least one delivery conduitand at least one waste conduit. The device additionally comprises a tipconfigured to be positioned along the distal end of the handpieceassembly, such that the tip is adapted to contact the skin surface beingtreated. According to certain embodiments, the tip comprises aperipheral lip, a first opening in fluid communication with the fluiddelivery conduit and a second opening in fluid communication with thewaste conduit and an abrasive element or surface positioned along adistal end of the tip, said abrasive element or surface configured toremove skin. In one embodiment, the first opening, the second openingand the abrasive element of the disc are positioned along an interior ofthe peripheral lip. In another arrangement, one or more waste conduitsare configured to be in fluid communication with a vacuum to selectivelyremove debris away from the tip. In other configurations, a deliveryconduit is placed in fluid communication with the waste conduit and thevacuum when the peripheral lip contacts a skin surface. In yet otherembodiments, one or more time-release materials are configured to bedelivered to the skin surface being treated.

In some embodiments, the handpiece assembly comprises a housing having aclamshell design. In one embodiment, a housing of the handpiece assemblycomprises two or more portions that are configured to removably orpermanently attach to each other (e.g., using screws, other fasteners,snap fit or friction fit connections, adhesives, welds and/or any otherconnection method or device). In some embodiments, the two or moreportions of the housing are configured to be manufactured using aninjection molding procedure or any other molding or manufacturingprocess (e.g., compression molding, thermoforming, extrusion, etc.). Inone embodiment, the two portions or more portions of the housingcomprise a plastic, metal, alloy and/or any other synthetic or naturalmaterial.

According to other embodiments, the device additionally includes a valveconfigured to control a flowrate of a fluid being delivered through thefluid delivery conduit to the tip. In another arrangement, the abrasiveelement or structure comprises one or more protruding members, spiralridges and/or abrasive surfaces. In certain embodiments, thetime-release material comprises a plurality of microcapsules or capsulesconfigured to release their internal contents at various times followingdelivery to the skin surface. In one embodiment, the time-releasematerials comprise one or more of the following: peptides, amino acids,UVA and/or UVB sunblocks, other sunblocking agents, skin tighteningagents, hyaluronic acid (HA), other hydration agents, hair removal orhair growth suppression agents, medicaments and pharmaceuticals,combinations thereof and/or any other substance. In other arrangements,time-release materials are impregnated along at least a portion of thetip. In yet other embodiments, the cartridge or other container is influid communication with the handpiece assembly. In certain embodiments,the time-release materials are configured to be released to the skinsurface after contact with water or another dilutant. In otherarrangements, the time-release materials are configured to treat acne oranother skin disorder.

According to certain embodiments of the present application, a handpieceassembly for treating a skin surface comprises a recess configured toreceive a cartridge or other container. The cartridge or other containercomprises one or more treatment materials, such as, for example, humangrowth factors, cytokines, soluble collagen, antioxidants, matrixproteins, serums, salicylic acid, other anti-acne acids and materials,microcapsules, capsules, other time-release products and substances,water (e.g., distilled, tap water, filtered, etc.), saline, otherdilutants or dissolvents, vitamins, chemical exfoliation agents,lotions, soothing agents, brightening or lightening agents, peptides,acids, anesthetics, medicants, other non-active or active compounds,other fluids or materials, combination or mixtures thereof and/or anyother substance. In one embodiment, the handpiece assembly comprises avalve or other flow control device or feature to enable a user toselectively regulate a flowrate of a treatment material through thehandpiece assembly. In other embodiments, the cartridge or othercontainer comprises an inlet configured to be in fluid communicationwith water, saline, another dilutant or dissolvent or another fluid. Thewater, saline, another dilutant or dissolvent or another fluid isconfigured to be delivered through the inlet and to an interior of thecartridge so as to mix or combine with a treatment material containedtherein. In some embodiments, the treatment material contained withinthe cartridge or container is a liquid, solid, gel, granulated materialor concentrated solution. In some embodiments, one or more treatmentfluids are conveyed from an outlet of the cartridge or container to atip attached to a distal end of the handpiece assembly.

According to certain arrangements, treatment materials that are providedto the skin interface during a dermabrasion procedure are configured tobe released or otherwise made available to a user's skin over apre-selected, relatively extended time period. Such time releasematerials can be provided in the form of microcapsules, other capsulesor enclosures and/or the like.

Regardless of the form in which they are provided (e.g., withinmicrocapsules or other enclosures), time-release products or materialscan be delivered to a skin surface directly through a cartridge or othercontainer. Such a cartridge can be positioned within a handpieceassembly, such as, for example, those illustrated in FIGS. 1-4F, 13A-16Band 18B herein. Cartridges or other containers containing suchtime-release materials can be provided in various locations of ahandpiece assembly, including, without limitation, a recess of the mainportion, underneath or near a removable tip and/or the like. In certainembodiments, a cartridge or other container containing one or moretime-release materials is separate from the handpiece assembly. Forexample, as illustrated in FIG. 18A, such a cartridge or other containercan be placed along a delivery line, which selectively supplies fluidsand/or other materials through the cartridge to a handpiece assembly. Inother arrangements, such as, for example, those illustrated in FIGS. 6B,7, 17 and 20A-23B herein, time-release materials can be provided to thehandpiece assembly from one or more upstream containers or other sourcesvia a delivery line. By way of example, in accordance with theconfiguration depicted herein in FIGS. 7 and 17, time-release and/orother products and substances can be placed within one or morecontainers of a manifold system. Such materials can be subsequentlydelivered through a handpiece assembly using one or more conduits to theskin area being treated.

In yet other arrangements, time-release materials are advantageouslyprovided, either alone or in combination with one or more othersubstances, within a recess, cavity or other opening or a tip or otherportion of a skin treatment system. For example, such recesses can beprovided along a distal surface of the tip, as illustrated in FIGS.12A-12C and discussed in greater detail herein. In certain embodiments,one or more time-release materials are embedded, impregnated, placed,stored and/or otherwise disposed on one or more surfaces or areas of thetip or other portion or component of the skin treatment system (e.g.,the foam pads of FIG. 19A-20B). Such time-release materials, which maybe provided alone or in combination with any other materials, cancomprise microcapsules, other capsules, solids, semi-solids, other driedsubstances, gels, concentrated solutions and/or the like. In somearrangements, time-release materials and/or other substances areprovided in capsules (e.g., microcapsules), caps, loose form (e.g.,positioned on or within a recess, other portion of the tip, within acartridge or other container, adhered to one or more surfaces, etc.), asa tablet, pill, disc or other dissolvable solid, saturated within a foampad or other sponge-like material and/or the like.

Regardless of where the time-release materials are positioned relativeto the handpiece assembly (e.g., within a cartridge or other container,within or outside of a handpiece assembly, in a recess or other openingof a tip or other portion of a handpiece assembly, within a foam pad, ona surface of a tip or other portion of a handpiece assembly, etc.),water (e.g., distilled, tap water, filtered, etc.), saline, otherdilutants and/or other fluids can be used to selectively dissolve,liquefy, melt, soften, dilute or otherwise prepare the time-releaseand/or any other materials. Accordingly, the desired salicylic acid,other anti-acne materials, human growth factors, cytokines, solublecollagen, antioxidants, matrix proteins, serums, water, saline, otherdilutants or dissolvents, vitamins, chemical exfoliation agents,lotions, soothing agents, brightening or lightening agents, peptides,amino acids, other acids, anesthetics, UVA and/or UVB sunblocks, othersunblocking agents, skin tightening agents, hyaluronic acid (HA), otherhydration agents, hair removal or hair growth suppression agents,medicaments and pharmaceuticals, other non-active or active compounds,other fluids or materials, combination or mixtures thereof and/or anyother substance can be advantageously provided to the skin surface beingtreated, as desired or required.

According to certain embodiments, time-release materials include one ormore active ingredients that target specific skin conditions or types.For instance, a time-release product used to help control skin acne caninclude salicylic acid. The salicylic acid can be provided alone or incombination with one or more other active and/or non-active ingredients(e.g., azelaic acid, topical retinoids, benzoyl peroxide, topicalantibiotics, other anti-acne materials, saline, other dilutants orfluids, soaps, hardening agents, gels, other binders, lotions,moisturizers, peptides, amino acids, UVA and/or UVB sunblocks, othersunblocking agents, skin tightening agents, hyaluronic acid (HA), otherhydration agents, hair removal or hair growth suppression agents,medicaments and pharmaceuticals, etc.).

Time-release salicylic acid capsules (e.g., microcapsules) and/or anyother active or non-active ingredients included in a skin treatmentmaterial can be encapsulated within a solid binder, such as, forexample, soap or gel. Thus, when water or another fluid is added to thematerial, the treatment material can at least partially dissolve,advantageously releasing capsules onto the skin surface. The capsulescan be configured to release their internal contents at different timeintervals after being deposited on or near a person's skin.

Alternatively, as discussed in greater detail herein, such microcapsulesor other time-release materials can be provided within a cartridge,another container, a recess or other opening and/or the like. Accordingto certain embodiments, the microcapsules or other time-releasematerials are included within a binder or are provided in loose form(e.g., as a solid, within a liquid, gel, other fluid or other medium,etc.). Thus, time-release materials can be selectively delivered to theskin (or be initially present at a tip-skin interface) in one or moredifferent forms. Regardless of the exact manner in which they areprovided to a person's skin, such time-release materials can help targetcertain skin ailments or conditions (e.g., acne, eczema, psoriasis,etc.), conditions (e.g., dry skin, oily skin, etc.) and/or the like.

In some embodiments, microcapsules and/or other time-release productsdelivered to the skin surface are configured to be released or otherwisebecome available to the skin at different times from each other. Forexample, microcapsules can be adapted to release salicylic acid and/orany other active or non-active ingredients contained therein in varioustime intervals (e.g., quarter-hour, half-hour, one-hour, two-hour,three-hour, etc.). Accordingly, the desired materials can be provided toa target skin surface to have an effect on such a surface over a longerperiod of time. This can facilitate a particular treatment procedure byeffectively prolonging the overall treatment time-period. For example,in some embodiments, an acne treatment is more effective if salicylicacid is released over a targeted skin surface during a longer timeperiod (e.g., less than 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, 8hours, 10 hours, 12 hours, 24 hours, 36 hours, 48 hours, more than 48hours, etc.).

In one embodiment, time-release materials are provided to a dermabrasionsystem which is adapted to treat skin having acne or another skincondition. A handpiece assembly having an abrasive distal end, such as,for example, a tip in accordance with any of the arrangementsillustrated or otherwise disclosed herein, or equivalents thereof, canbe used to treat a skin surface of a patient. As the tip is moved acrossthe target skin area, exfoliated skin, infected waste and/or othermaterials can be advantageously removed. In addition, the treatmentsystem can be configured to selectively deposit time-release productonto the treated skin before, after and/or contemporaneously with theexfoliation process. As discussed in greater detail herein, thetime-release product can be delivered from a cartridge or othercontainer located either within a handpiece assembly or separate fromit. In some arrangements, water, saline and/or other dilutants arerequired to at least partially dissolve or otherwise release suchsubstances (e.g., from a binder, gel, solid, etc.). Salicylic acidand/or any other materials contained within the time-release product(e.g., microcapsules, other capsules, caps, etc.) and/or other materialsdelivered to the patient's skin can be advantageously released over alonger time-period so as to help prevent or reduce the likelihood ofbacterial infection, pain or discomfort, sensitivity to sunlight orother light sources and/or the like.

According to certain arrangements, time-release capsules or othermaterials containing salicylic acid and/or other skin solutions can beembedded on or near a surface of a tip using a binder. For example,glycerin soap or other base materials or hardening agents can be used tobind the time-release materials. As water, saline or other dilutants orfluids are selectively delivered to the bound materials, time-releasematerials can dissolve, allowing salicylic acid capsules to be releasedto a target area of the skin. In one configuration, the time-releasematerials comprise approximately 30% of the bound mixture by volume,while the soap or other base material and/or hardening agent comprisesthe remaining approximately 70%. In other embodiments, the volumetricratio of time-release materials to base materials and hardening agentscan be greater or less than 3:7, as required or desired (e.g., less thanapproximately 1:9, approximately 1:4, 2:3, 1:1, 3:2, 7:3, 4:1, more thanapproximately 4:1, etc.).

According to certain arrangements, a disc, plate or other member havingdiamonds or any other abrasive element is removably positioned within aninterior region of the tip (e.g., generally between the tip andadjustable distal portion or any other component of the handpieceassembly). Such a disc, which is configured to contact and abrade skinthrough one or more openings of the tip, can be conveniently removed forcleaning, replacement and/or any other purpose

According to other embodiments, a treatment material disposed on or nearthe tip of the handpiece assembly is configured to be mixed or combinedwith water, saline or another fluid being delivered through thehandpiece assembly to create a treatment fluid. In certain embodiments,the treatment material is provided as a solid, semi-solid, gel,granulated material or concentrated fluid or solution. In somearrangements, the treatment material is positioned within a recess ofthe tip, between the tip and a main body portion of the handpieceassembly or within the main body portion of the handpiece assembly. Insome embodiments, water, saline, treatment fluid or other fluid beingconveyed through the handpiece assembly is configured to be heated.

According to certain embodiments of the present application, a devicefor treating a skin surface comprises a handpiece assembly having adistal end and a proximal end. The handpiece assembly comprises at leastone delivery conduit and at least one waste conduit. The handpieceassembly further comprising a recess or other opening configured toreceive a cartridge or other container having an interior cavity. In oneembodiment, the interior cavity of the cartridge is placed in fluidcommunication with the fluid delivery conduit when the cartridge issecured within the recess. The device additionally includes a tippositioned along the distal end of the handpiece assembly, such that thetip is configured to contact the skin surface. In certain embodiments,the tip comprises a peripheral lip, a first opening in fluidcommunication with the fluid delivery conduit and a second opening influid communication with the waste conduit and an abrasive element. Thefirst opening, the second opening and the abrasive element are generallypositioned along an interior of the peripheral lip. In one embodiment,the waste conduit is configured to be in fluid communication with avacuum to selectively remove debris away from the tip. In otherarrangements, the delivery conduit is placed in fluid communication withthe waste conduit and the vacuum when the peripheral lip contacts a skinsurface.

In certain arrangements, the device further includes a valve generallypositioned between the interior cavity of the cartridge and the fluiddelivery conduit. The valve can be adapted to control the flowrate of afluid being conveyed from the interior cavity of the cartridge to thetip. In other embodiments, the handpiece assembly comprises anadjustable intermediate space positioned generally between the interiorcavity of the cartridge and the fluid delivery conduit. In onearrangement, a volume of the adjustable intermediate space can beselectively modified by moving an actuator on the handpiece assembly. Inother configurations, the handpiece assembly comprises a stem in fluidcommunication with the fluid delivery conduit. The stem can be adaptedto extend into the interior cavity of a cartridge when the cartridge ispositioned with the recess of the handpiece assembly. In otherembodiments, the tip is selectively removable from the handpieceassembly. In one arrangement, the abrasive element comprises a pluralityof posts, other protruding members, a spiral-shaped ridge, an abrasivesurface, a foam pad, another type of pad and/or the like. In somearrangements, the device further includes a heating element configuredto selectively heat a fluid being conveyed through the delivery conduit,another interior passage or conduit of the handpiece assembly, the tip,an inlet line and/or the like. In other embodiments, the cartridgecomprises an inlet configured to be placed in fluid communication with adelivery source.

According to other arrangements, a skin treatment system includes ahandpiece assembly having a distal end and a proximal end. The handpieceassembly comprises a fluid delivery conduit. In one embodiment, thehandpiece assembly comprises a first portion and a second portion, withthe first portion being selectively movable relative to the secondportion. The skin treatment system further includes a tip adapted tocontact skin and positioned on the distal end of the handpiece assembly.In one embodiment, the tip comprises a first opening, which is in fluidcommunication with the fluid delivery conduit, and an abrasive element.The system further comprises an intermediate space generally definedbetween the first and second portions of the handpiece assembly.Movement of the first portion with respect to the second portion canmodify the volume of the intermediate space and generally control theflowrate of a fluid being conveyed through the fluid delivery conduit.In some embodiments, the system further includes an actuator on thehandpiece assembly for moving the first portion relative to the secondportion.

According to other embodiments, movement of the first portion withrespect to the second portion is produced by rotating the second portionrelative to the first portion. In some arrangements, the tip isselectively removable from the second portion. In another adaptation,the tip comprises a plurality of posts or protruding members configuredto treat skin. In other arrangements, the tip comprises one or moreridges (e.g., spiral-shaped ridges), abrasive surfaces or elementsand/or other features or components configured to treat skin. In certainembodiments, the handpiece assembly further comprises a waste channel influid communication with a second opening in the tip. In anotherembodiment, the handpiece assembly includes a recessed area configuredto receive a cartridge comprising at least one treatment fluid ormaterial. In other arrangements, the cartridge includes an interiorportion which is at least partially defined by a membrane. The membranecan be configured to be pierced by a hollow spike of the first portionof the handpiece assembly when the cartridge is properly inserted withinthe recessed area, so that the hollow spike is placed in fluidcommunication with the delivery channel. In certain configurations, theinterior portion of the cartridge comprises human growth factors,cytokines, soluble collagen, antioxidants, matrix proteins, serums,salicylic acid, other anti-acne acids and materials, microcapsules,capsules, other time-release products and substances, water (e.g.,distilled, tap water, filtered, etc.), saline, other dilutants ordissolvents, vitamins, chemical exfoliation agents, lotions, soothingagents, brightening or lightening agents, peptides, acids, anesthetics,medicants, other non-active or active compounds, other fluids ormaterials, combination or mixtures thereof and/or any other substance.In other arrangements, the device comprises a heater configured toselectively heat a fluid being conveyed through the fluid deliveryconduit toward the tip.

According to certain embodiments, a method of providing a treatmentfluid to a skin surface while treating said skin surface with ahandpiece device includes providing at least one treatment material onor within a handpiece device. In one arrangement, a tip is configured tobe removably positioned along a distal end of a main body portion of thehandpiece assembly. The tip can be adapted to abrade or otherwise treatskin when moved relative to a skin surface. The treatment methodadditionally includes directing a first fluid through a delivery passageof the handpiece assembly so that said delivery passage generallycontacts at least one treatment material of the tip. In somearrangements, the treatment material is configured to at least partiallydissolve, dilute or combine with the first fluid so as to create adesired treatment fluid. Further, the treatment fluid can be configuredto be provided to the tip and to the skin surface being treated while adistal end of the tip is being translated over said skin surface.

In some arrangements, the treatment material comprises a solid, granularmaterial, gel or concentrated solution and/or any other material. Inother embodiments, the first fluid comprises water (e.g., sterile, tap,distilled, filtered, etc.), saline, other dilutants or dissolventsand/or any other fluid. In other arrangements, the treatment fluidcomprises human growth factors, cytokines, soluble collagen,antioxidants or matrix proteins. In another embodiment, the treatmentmaterial is positioned in or near the tip, such as, for example, withina post, other protruding member, other recess, underneath the tip and/orlike. In other arrangements, the treatment material comprises a disc,tablet, capsule, granular material, gel and/or the like. In oneembodiment, the treatment material is configured to be positioned withina cage or other porous container. In other arrangements, the disc,table, capsule or other treatment material is configured to be securedgenerally between the main body portion and the tip of the handpieceassembly. In one configuration, the method further includes regulating aflowrate of the first fluid by selectively controlling a valve on thehandpiece assembly. In another arrangement, the method additionallyincludes selectively heating the first fluid using a heating memberpositioned in thermal communication with the delivery passage of thehandpiece assembly. In some embodiments, the treatment material ispositioned within a cartridge which is configured to be removablysecured to a receiving area of the handpiece assembly.

According to some embodiments disclosed in the present application, adevice for treating the skin comprises a handpiece assembly having adistal end and a proximal end, a cartridge comprising an interior cavityand a tip on the distal end of the handpiece assembly. The handpieceassembly includes a fluid delivery conduit and a waste conduit. Inaddition, the cartridge is coupled to the handpiece assembly, with theinterior cavity of the cartridge being in fluid communication with thefluid delivery conduit. Further, the tip is configured to contact theskin. The tip comprises a peripheral lip, a first opening in fluidcommunication with the fluid delivery conduit, a second opening in fluidcommunication with the waste conduit and an abrasive element. The firstopening, the second opening and the abrasive element of the tip aregenerally positioned within the peripheral lip.

In some embodiments, the device further comprises a valve positionedbetween the interior cavity of the cartridge and the fluid deliveryconduit. In one embodiment, the handpiece assembly comprises anadjustable intermediate space positioned generally between the interiorcavity of the cartridge and the fluid delivery conduit. In anotherarrangement, a volume of the adjustable intermediate space can beselectively modified by moving an actuator on the handpiece assembly. Inother embodiments, the handpiece assembly comprises a recessed areaconfigured to receive the cartridge.

According to other embodiments, the handpiece assembly comprises a stemthat is in fluid communication with the fluid delivery conduit as thestem is configured to extend into the interior cavity of a cartridgewhen the cartridge is coupled to the handpiece assembly. In anotherembodiment, the tip is selectively removable from the handpieceassembly. In some arrangements, the abrasive element comprises aplurality of protruding members. In other embodiments, the tip comprisesan abrasive edge.

According to another embodiment, a system for treating the skincomprises a handpiece assembly having a distal end and a proximal endand a tip on the distal end of the handpiece assembly configured tocontact the skin. The handpiece assembly includes a fluid deliveryconduit and first and second portions. Further, the tip includes a firstopening in fluid communication with the fluid delivery conduit and anabrasive element. An intermediate space generally defined between thefirst and second portions of the handpiece assembly is in fluidcommunication with the fluid delivery conduit. In one embodiment,movement of the first portion with respect to the second portionmodifies the volume of the intermediate space to control a flowratethrough the fluid delivery conduit. The system further comprises anactuator on the handpiece assembly for actuating movement between thefirst portion and the second portion.

In some embodiments, movement of the first portion with respect to thesecond portion is produced by rotating the second portion relative tothe first portion. In other embodiments, the tip is selectivelyremovable from the second portion. In still other arrangements, the tipcomprises a plurality of protruding members configured to treat skin. Inanother embodiment, the tip comprises an abrasive surface configured totreat skin.

According to some embodiments, the handpiece assembly further comprisesa waste channel in fluid communication with a second opening in the tip.In another arrangement, the handpiece assembly includes a recessed areaconfigured to receive a cartridge comprising at least one treatmentfluid or material. In other embodiments, the cartridge includes aninterior portion at least partially defined by a membrane. The membraneis configured to be pierced by a hollow spike of the first portion ofthe handpiece assembly. Further, the hollow spike is in fluidcommunication with the delivery channel. In one embodiment, the interiorportion of the cartridge comprises human growth factors, cytokines,soluble collagen, antioxidants and/or matrix proteins.

According to other embodiments, the present application discloses amethod for treating the skin of a patient with a skin treatment devicehaving a working end that includes an abrading structure configured toengage and abrade skin. The method includes placing the working end ofthe skin treatment device against the skin of the patient, translatingthe working end over the skin to abrade a skin surface, providing atreatment fluid to the skin through an opening in the working end andaspirating skin debris from the skin surface through an aspirationopening in the working end of the skin treatment device. In someembodiments, the treatment fluid comprises human growth factors,cytokines, soluble collagen, antioxidants and/or matrix proteins.

According to some embodiments disclosed in the present application, adevice for treating the skin comprises a handpiece assembly having adistal end and a proximal end. The handpiece assembly includes a fluiddelivery conduit and a waste conduit. In addition, the handpieceassembly is adapted to receive a cartridge having an interior cavity.Further, the device includes a tip attached to the distal end of thehandpiece assembly and comprising a surface configured to treat skin.The waste conduit is configured to be in fluid communication with avacuum source and the fluid delivery conduit is configured to be influid communication with an interior cavity of a cartridge when acartridge is secured to the handpiece assembly.

In some embodiments, the handpiece assembly comprises a flow controlfeature configured to selectively regulate a flowrate through the fluiddelivery conduit. In another arrangement, the handpiece assemblyincludes a main body portion and an adjustable portion attached to themain body portion. The flow control feature can comprise an adjustableintermediate space generally located between the main body portion andthe adjustable portion. In other embodiments, a volume of the adjustableintermediate space can be selectively modified by moving the main bodyportion relative to the adjustable portion of the handpiece assembly.

In one embodiment, the handpiece assembly comprises a recessed areaconfigured to secure a cartridge. In another arrangement, the handpieceassembly comprises a stem adapted to access an interior cavity of acartridge when a cartridge is secured to the handpiece assembly.According to some embodiments, the tip is selectively removable from thehandpiece assembly. In other embodiments, the tip comprises a pluralityof protruding members configured to treat skin. In still otherarrangements, the tip comprises an abrasive surface configured to treatskin.

According to another embodiment, a system for treating the skin includesa handpiece assembly. The handpiece assembly comprises a tip configuredto treat skin, a first portion and a second portion. The first portionincludes a delivery conduit, which has a first longitudinal axis, and isconfigured to be in fluid communication with at least one fluid source.Further, the second portion includes a distal end and a proximal end,with the proximal end being attached to the main body portion and thedistal end being attached to the tip. The second portion includes adelivery channel having a second longitudinal axis and being in fluidcommunication with the tip and the delivery conduit. In addition, thesecond portion further comprises a removal channel being in fluidcommunication with the tip and a suction source. In some embodiments, anintermediate space is generally defined between the first and secondportions of the handpiece assembly. Such an intermediate space is influid communication with the delivery conduit of the first portion andthe delivery channel of the second portion. Further, a volume of theintermediate space is configured to be adjusted by selectively modifyinga separation distance between the first portion and the second portion.Accordingly, a flowrate from a fluid source to the tip can beselectively controlled by modifying the separation distance between thefirst portion and the second portion.

In some embodiments, the separation distance between the first portionand the second portion is modified by rotating the second portionrelative to the first portion. In other arrangements, the firstlongitudinal axis of the delivery conduit is generally offset with thesecond longitudinal axis of the delivery channel. In one embodiment, thetip is selectively removable from the second portion.

According to some embodiments, the tip comprises a plurality ofprotruding members configured to treat skin. In other embodiments, thetip comprises an abrasive surface configured to treat skin. In oneembodiment, the first portion further comprises a waste channel in fluidcommunication with the removal channel of the second portion. In anotherarrangement, the first portion includes a recessed area configured toreceive a cartridge comprising at least one treatment fluid or material.In some embodiments, the cartridge includes an interior portion at leastpartially defined by a membrane which is configured to be pierced by ahollow spike of the first portion of the handpiece assembly. The hollowspike is in fluid communication with the delivery channel. According toother embodiments, the cartridge the interior portion of the cartridgecomprises human growth factors, cytokines, soluble collagen,antioxidants or matrix proteins.

According to other embodiments disclosed in the present application, amethod of treating the skin comprises providing a handpiece assemblycomprising a body and a tip having a distal end. The handpiece assemblyincludes a delivery conduit and a waste conduit that are in fluidcommunication with the distal end of the tip. The method furtherincludes placing the delivery conduit of the handpiece assembly in fluidcommunication with a fluid source for providing at least one treatmentfluid to the distal end of the tip and placing the waste conduit of thehandpiece assembly in fluid communication with a suction source forremoving waste materials from the distal end of the tip. In addition,the method comprises moving the handpiece assembly along a person's skinand activating the suction source to remove a volume of waste materialsfrom the distal end of the tip and to simultaneously deliver a volume ofthe treatment fluid to the distal end of the tip. In one embodiment, theflowrate at which treatment fluids and/or other materials are deliveredto the tip can be varied by a valve or other flow control feature of thehandpiece assembly. In some embodiments, the treatment fluid compriseshuman growth factors, cytokines, soluble collagen, antioxidants, matrixproteins, serums, salicylic acid, other anti-acne acids and materials,microcapsules, capsules, other time-release products and substances,water (e.g., distilled, tap water, filtered, etc.), saline, otherdilutants or dissolvents, vitamins, chemical exfoliation agents,lotions, soothing agents, brightening or lightening agents (e.g., kojicacid), peptides, acids, anesthetics, medicants, other non-active oractive compounds, other fluids or materials, combination or mixturesthereof and/or any other substance.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features, aspects and advantages of the presentinventions are described with reference to drawings of certain preferredembodiments, which are intended to illustrate, but not to limit, thepresent inventions. It is to be understood that the attached drawingsare for the purpose of illustrating concepts of the present inventionsand may not be to scale.

FIG. 1 illustrates a perspective view of a handpiece assembly configuredfor use with a skin treatment system according to one embodiment;

FIG. 2A illustrates a side view of the handpiece assembly of FIG. 1;

FIG. 2B illustrates an exploded side view of the handpiece assembly ofFIG. 1;

FIG. 3A illustrates an exploded perspective view of the handpieceassembly of FIG. 1;

FIG. 3B illustrates a longitudinal cross-sectional view of the handpieceassembly of FIG. 1;

FIG. 4A illustrates a partial cross-sectional view of the handpieceassembly of FIG. 1 with an internal fluid delivery valve in a firstposition;

FIG. 4B illustrates a partial cross-sectional view of the handpieceassembly of FIG. 1 with an internal fluid delivery valve in a secondposition;

FIGS. 4C and 4D illustrate perspective views of a handpiece assemblyaccording to another embodiment;

FIG. 4E illustrates a cross-sectional view of the handpiece assembly ofFIGS. 4C and 4D;

FIG. 4F schematically illustrates a handpiece assembly which comprises acartridge and which is in fluid communication with a vacuum sourceaccording to one embodiment;

FIG. 5A illustrates an exploded perspective view of a handpiece assemblyaccording to another embodiment;

FIG. 5B illustrates a bottom perspective view of one embodiment of a tipconfigured to be secured to the handpiece assembly of FIG. 5A;

FIG. 5C illustrates a cross-sectional view of the handpiece assembly andthe tip of FIG. 5A;

FIG. 6A illustrates a side view of one embodiment of a cartridge adaptedto be inserted within a handpiece assembly;

FIG. 6B illustrates a side view of another embodiment of a cartridgeadapted to be inserted within a handpiece assembly;

FIG. 6C illustrates a front view of the cartridge of FIG. 6A;

FIG. 6D illustrates a front view of the cartridge of FIG. 6B;

FIG. 6E illustrates a perspective view of one embodiment of a cartridgeconfigured for placement within a handpiece assembly;

FIG. 6F illustrates a side view of the cartridge of FIG. 6E;

FIG. 6G illustrates a side view of the cartridge of FIG. 6E with theouter housing of the cartridge shown as transparent in order to view theinternal contents of the cartridge;

FIG. 7 schematically illustrates the cartridge of FIG. 6B positionedwithin a handpiece assembly and being in fluid communication with afluid delivery system according to one embodiment;

FIG. 8A illustrates a top perspective view of one embodiment of aremovable tip configured to be placed along the distal end of ahandpiece device;

FIG. 8B illustrates a bottom perspective view of the removable tip ofFIG. 8A;

FIG. 8C illustrates a top view of the removable tip of FIG. 8A;

FIG. 8D illustrates a side view of the removable tip of FIG. 8A;

FIG. 8E illustrates a bottom view of the removable tip of FIG. 8A;

FIG. 8F illustrates a cross-sectional view of the removable tip of FIG.8A;

FIG. 9A illustrates a top perspective view of another embodiment of aremovable tip configured to be placed along the distal end of ahandpiece device;

FIG. 9B illustrates a bottom perspective view of the removable tip ofFIG. 9A;

FIG. 9C illustrates a top view of the removable tip of FIG. 9A;

FIG. 9D illustrates a side view of the removable tip of FIG. 9A;

FIG. 9E illustrates a bottom view of the removable tip of FIG. 9A;

FIG. 9F illustrates a cross-sectional view of the removable tip of FIG.9A;

FIG. 10A illustrates a top perspective view of another embodiment of aremovable tip configured to be placed along the distal end of ahandpiece device;

FIG. 10B illustrates a bottom perspective view of the removable tip ofFIG. 10A;

FIG. 10C illustrates a top view of the removable tip of FIG. 10A;

FIG. 10D illustrates a side view of the removable tip of FIG. 10A;

FIG. 10E illustrates a bottom view of the removable tip of FIG. 10A;

FIG. 10F illustrates a cross-sectional view of the removable tip of FIG.10A;

FIG. 11 illustrates a cross-sectional view of a tip comprising poststhat have been partially filled with solids, gels and/or other materialsconfigured to be mixed or combined with water, other dilutants or otherfluids, according to one embodiment;

FIG. 12A illustrates a front perspective view of one embodiment of a tipcomprising a plurality of recesses that can be selectively filledsolids, gels and/or other materials;

FIG. 12B illustrates a cross-sectional view of the tip of FIG. 12A;

FIG. 12C illustrates a cross-sectional view of another embodiment of atip comprising one or more recesses that are configured to selectivelyreceive solids, gels and/or other materials;

FIG. 13A illustrates a cross-sectional view of a tip having a cartridgeor other container comprising solids, gels and/or other materialssecured thereto, according to one embodiment;

FIG. 13B illustrates an exploded perspective view of the tip andcartridge of FIG. 13A;

FIG. 14A schematically illustrates an exploded view of a handpieceassembly, a tip and a cartridge or other container according to oneembodiment;

FIG. 14B illustrates an exploded cross-sectional view of one embodimentof a tip and a cartridge or other container comprising solids, gelsand/or other materials;

FIG. 14C illustrates a cross-sectional view of the cartridge and tip ofFIG. 14B with the cartridge secured within an interior portion of thetip according to one embodiment;

FIG. 15A illustrates an exploded cross-sectional view of anotherembodiment of a tip and a cartridge or other container comprisingsolids, gels and/or other materials;

FIG. 15B illustrates a cross-sectional view of the cartridge and tip ofFIG. 15A with the cartridge secured within an interior portion of thetip according to one embodiment;

FIG. 16A schematically illustrates an exploded view of a handpieceassembly, a tip and a cartridge or other container according to anotherembodiment;

FIG. 16B illustrates an exploded cross-sectional view of anotherembodiment of a handpiece assembly, a tip and a cartridge or othercontainer comprising solids, gels and/or other materials;

FIG. 17 schematically illustrates a handpiece assembly in fluidcommunication with a vacuum source and two supply containers accordingto one embodiment;

FIG. 18A schematically illustrates a handpiece assembly in fluidcommunication with a waste conduit and a supply conduit that comprises acartridge holder adapted to receive a cartridge or other containeraccording to one embodiment;

FIG. 18B schematically illustrates a handpiece assembly configured toreceive a cartridge or other container according to one embodiment;

FIG. 19A illustrates an exploded perspective view of a handpieceassembly, a tip and pads configured to be secured therebetween accordingto one embodiment;

FIG. 19B illustrates a cross-sectional view of the tip, a pads and thehandpiece assembly of FIG. 19A;

FIG. 20A illustrates an perspective view of a handpiece assemblyconfigured to receive a pad according to another embodiment;

FIG. 20B illustrates a side view of the handpiece assembly of FIG. 20A;

FIG. 20C illustrates a cross-sectional view of the handpiece assembly ofFIG. 20A;

FIG. 20D illustrates a detailed cross-sectional view of the handpieceassembly of FIG. 20A comprising a pad secured within an interior portionof its tip according to one embodiment;

FIG. 21A illustrates an exploded perspective view of a handpieceassembly that is adapted to be in fluid communication with a vacuumsource and a fluid delivery source according to one embodiment;

FIG. 21B illustrates a cross-sectional view of the handpiece assembly ofFIG. 20A;

FIG. 22 illustrates a perspective view of a handpiece assemblyconfigured to receive an abrasive disc according to one embodiment;

FIG. 23A illustrates a cross-sectional view of the handpiece assembly ofFIG. 22;

FIG. 23B illustrates a front view of the handpiece assembly of FIG. 22;

FIG. 24 illustrates a perspective view of a handpiece assembly for usein a skin treatment system according to one embodiment;

FIG. 25A illustrates a perspective view of one embodiment of a conduitadapted for use in the handpiece assembly of FIG. 24;

FIG. 25B illustrates a cross-sectional view of one embodiment of thetubing of FIG. 25A;

FIG. 26 illustrates a perspective view of a handpiece assembly with aportion of the exterior surface removed to reveal an interior portion ofthe assembly according to one embodiment;

FIG. 27 schematically illustrates one embodiment of a skin treatmentsystem according to one embodiment;

FIG. 28 illustrates a perspective view of a skin treatment systemcomprising a handpiece assembly and a canister according to oneembodiment;

FIG. 29A illustrates a perspective view of a combination storage andwaste canister in accordance with another embodiment;

FIG. 29B illustrates a perspective view of a combination storage andwaste canister in accordance with yet another embodiment;

FIG. 30 illustrates a perspective view of another embodiment of ahandpiece assembly;

FIG. 31 illustrates a perspective view of an embodiment of a combinationstorage and waste canister configured to be used with the handpieceassembly of FIG. 30;

FIG. 32 schematically illustrates one embodiment of the distal end of ahandpiece assembly having a tip that is configured to tilt or pivot;

FIG. 33 illustrates a perspective view of a cartridge or other containercomprising a treatment fluid or other material according to oneembodiment;

FIG. 34 illustrates a cross-sectional view of a handpiece assembly orother portion of the treatment system configured to receive thecartridge or container of FIG. 33;

FIG. 35 illustrates a perspective view of a handpiece assembly accordingto another embodiment;

FIG. 36 illustrates a cross-sectional view of a portion of a handpieceassembly configured to receive a cartridge or other container accordingto one embodiment;

FIG. 37 illustrates a perspective view of waste cartridge or containerconfigured for use with a skin treatment system according to oneembodiment;

FIG. 38 illustrates a perspective view of a handpiece assembly accordingto one embodiment;

FIG. 39 illustrates a cartridge or other container configured forplacement within a corresponding area of the handpiece assembly of FIG.38;

FIG. 40 illustrates a handpiece assembly in fluid communication with afluid transfer system and a waste canister according to one embodiment;

FIGS. 41A and 41B illustrate an embodiment of a handpiece assembly;

FIG. 42 illustrates another embodiment of a handpiece assembly;

FIG. 43A illustrates a perspective view of a handpiece assembly in fluidcommunication with a waste canister in accordance with one embodiment;

FIG. 43B illustrates a top perspective view of one embodiment of aremovable tip adapted for placement on a handpiece assembly;

FIG. 43C illustrates a bottom perspective view of the removable tip ofFIG. 43B;

FIG. 44 illustrates a perspective view of another embodiment of ahandpiece assembly;

FIG. 45 illustrates a perspective view of a base charging memberconfigured to receive a handpiece assembly according to one embodiment;

FIG. 46 illustrates a perspective view of a skin treatment systemcomprising a handpiece assembly and a base member having a wastecanister according to one embodiment;

FIG. 47 illustrates a side elevation view of the system of FIG. 46;

FIG. 48 illustrates a perspective view of a skin treatment deviceaccording to another embodiment; and

FIG. 49 illustrates a front view of the skin treatment device of FIG. 48positioned on a user's hand.

DETAILED DESCRIPTION

FIG. 1 illustrates one embodiment of a handpiece assembly 100 configuredfor use with a skin treatment system. Although the various embodimentsof a handpiece assembly, a tip and related components have specificrelevance to a skin treatment system, the features, advantages and othercharacteristics disclosed herein may have direct or indirectapplicability in other applications, such as, for example, other medicaldevices, mechanical devices and/or the like. As shown, the handpieceassembly 100 can include a main body portion 110, an adjustable distalportion 130 and a tip 160. In addition, as illustrated in the depictedembodiment, the handpiece assembly 100 can include one or moreconnections that are configured to transfer fluids or other materials toand/or from the working end of the assembly 100. For example, asdiscussed in greater detailed herein, the handpiece assembly 100 can bein fluid communication with a waste conduit 190 that is adapted toremove exfoliated skin, serums, salicylic acid, other anti-acne acidsand materials, microcapsules, capsules, other time-release products andsubstances, other fluids or materials and/or the like from the workingsurface.

With continued reference to FIG. 1, the handpiece assembly 100 can beadvantageously configured to receive a cartridge 200. In someembodiments, the cartridge 200 comprises human growth factors,cytokines, soluble collagen, antioxidants, matrix proteins, serums,salicylic acid, other anti-acne acids and materials, microcapsules,capsules, other time-release products and substances (e.g., capsules,microcapsules, etc.), water (e.g., distilled, tap water, filtered,etc.), saline, other dilutants or dissolvents, vitamins, chemicalexfoliation agents, lotions, soothing agents, brightening or lighteningagents (e.g., kojic acid), peptides, acids, anesthetics, medicants,other non-active or active compounds, other fluids or materials,combination or mixtures thereof and/or any other substance. As discussedin greater detail herein, such materials can be selectively delivered toa user's skin while the handpiece assembly 100 is being used. In someembodiments, the handpiece assembly 100 includes an adjustable valve orother flow control feature to enable a user to regulate the rate ofdelivery of such fluids or other materials to the treatment surface.

In alternative embodiments, such as, for example, those discussed hereinwith reference to FIGS. 11-16, 19A, 19B, 20A-20D, 21A, 21B and 24-48,one or more materials can be strategically embedded, impregnated,placed, stored and/or otherwise disposed on one or more surfaces orareas of the tip or other portion or component of the skin treatmentsystem (e.g., the foam pads of FIG. 19A-20B). Such materials cancomprise solids, semi-solids, other dried substances, gels, concentratedsolutions and/or the like. For example, such materials can be providedin loose form (e.g., positioned on or within a recess, other portion ofthe tip, within a cartridge or other container, adhered to one or moresurfaces, etc.), as a tablet, capsule, pill, disc or other dissolvablesolid, saturated within a foam pad or other sponge-like material and/orthe like. Thus, in certain arrangements, water (e.g., distilled, tapwater, filtered, etc.), saline, other dilutants and/or other fluidswhich are delivered to the tip can selectively dissolve, liquefy, melt,soften, dilute or otherwise prepare the materials embedded, impregnatedand/or otherwise positioned on the tip, within a cartridge or othercontainer and/or on or within another portion or component of a skintreatment system (e.g., handpiece assembly, fluid line upstream of thehandpiece assembly, etc.). Accordingly, the desired human growthfactors, cytokines, soluble collagen, antioxidants, matrix proteins,serums, salicylic acid, other anti-acne acids and materials,microcapsules, capsules, other time-release products and substances,peptides, amino acids, UVA and/or UVB sunblocks, other sunblockingagents, skin tightening agents, hyaluronic acid (HA), other hydrationagents, hair removal or hair growth suppression agents, medicaments andpharmaceuticals, water, saline, other dilutants or dissolvents,vitamins, chemical exfoliation agents, lotions, soothing agents, skinbrightening or lightening agents, other acids, anesthetics, medicants,other non-active or active compounds, other fluids or materials,combination or mixtures thereof and/or any other substance can beadvantageously provided to the skin surface being treated, as desired orrequired.

In addition, as illustrated in FIG. 1, the handpiece assembly 100 can beconnected to a vacuum. For example, the waste conduit 190 of thehandpiece assembly can be placed in fluid communication with a suctionsource in order to remove exfoliated skin, spent fluids, waste materialsand/or other substances away from the treatment surface. According tocertain arrangements, the handpiece assembly 100 is configured toreceive one or more removable tips 160, which may be selected based uponthe specific procedure being performed, the desired result and/or anyother considerations. Additional details regarding removable tips areprovided with reference to certain embodiments disclosed herein.

With reference to FIGS. 2A and 2B, the handpiece assembly 100 cancomprise a recess 111 along the main body portion 110. Such a recess 111or other region can be sized, shaped and otherwise adapted to receive acartridge 200. In any of the embodiments described herein, the cartridge200 can include, without limitation, a standard or non-standard vial,ampoule or any other container. As discussed in greater detail herein,the handpiece assembly 100 can be configured to secure the cartridge 200or other container within the recess 111 or any other area during use.In some embodiments, serums, salicylic acid, other anti-acne acids andmaterials, microcapsules, capsules, other time-release products andsubstances, other fluids and/or other materials contained within thecartridge 200 can be drawn toward the tip 160 using one or more suctionsources (e.g., the vacuum source configured to remove waste materialsfrom the tip 160). In other embodiments, the fluids and/or othermaterials contained within the cartridge gravity flow toward the tip 160or are conveyed with the help of a fluid transfer device. The cartridge200 can be selectively removed from the handpiece assembly 100 when adesired volume or other amount of serum or other material has beendelivered to the tip 160.

In other arrangements, two or more different cartridges 200 can be usedduring a skin treatment procedure. For example, a particular proceduremay require the contents (e.g., serums, salicylic acid, other anti-acneacids and materials, microcapsules, capsules, other time-releaseproducts and substances, proteins, brightening or lightening agents,peptides, other fluids or substances, etc.) of two or more differentcartridges 200. Thus, a user can load and/or unload a combination ofcartridges 200 or other containers within a handpiece assembly 100during a treatment procedure, either at the same time or sequentially(e.g., one after another). With continued reference to FIG. 2B, thecartridge 200 can be inserted into the recess 111 in a directiongenerally represented by arrow 113.

FIG. 3A illustrates an exploded perspective view of one embodiment of ahandpiece assembly 100 identical or similar to the one depicted inFIG. 1. As shown, the handpiece assembly 100 can comprise a main bodyportion 110 and an adjustable distal portion 130 rotatably attachedthereto. As discussed and illustrated with reference to certainembodiments disclosed herein, rotation of the adjustable distal portion130 relative to the main portion 110 can advantageously permit a user toregulate the flow of serums, other fluids, materials and/or the likebeing delivered from the container 200 to the tip 160 of the handpieceassembly 100.

As illustrated in FIG. 3A, the adjustable distal portion 130 of thehandpiece assembly 100 can comprise one or more tabs 136 or otherprotruding members that are configured to align with correspondingrecesses 116 or other features of the main body portion 110. In oneembodiment, once the tabs 136 of the distal portion 130 are aligned withthe recesses 116, the adjustable distal portion 130 can be moved towardthe main body portion 110 until the tabs 136 reach a recessed annularring 118. Consequently, the distal portion 130 can be rotated relativeto the main body portion 110 so that the tabs 136 slide or otherwisemove within the recessed annular ring 118 of the main body portion 110.Such a feature can help secure the adjustable distal portion 130 to themain body portion 110. As discussed in greater detail herein, rotationof the adjustable distal portion 130 relative to the main body portion110 can help regulate the flowrate of fluids or other substances from acartridge 200 to the tip 160 of the handpiece assembly 100. In otherarrangements, the main body portion 110 comprises one or more otherprotruding members or features, and the adjustable distal portion 130comprises corresponding recessed or other receiving areas or portion.Alternatively, one or more other interconnecting members or features canbe used to secure the main body portion 110 to the adjustable distalportion 130.

In the embodiment illustrated in FIG. 3A, the distal portion 130comprises one or more O-rings 138 or other sealing members to preventundesirable leaks between the main body portion 110 and the adjustabledistal portion 130. Further, the opposite end of the adjustable distalportion 130 can be shaped, sized and otherwise configured to receive atip 160. In some embodiments, the tips 160 are removable, allowing auser to select between different tip designs, as desired or required bya particular application or use. In alternative arrangements, however,the tip 160 is permanently or semi-permanently attached to the handpieceassembly 100. Further, as shown in FIG. 3A, one or more O-rings 154 orother sealing members can be positioned between a tip 160 and theadjustable distal portion 130 of the handpiece assembly 100.

FIG. 3B illustrates a cross-sectional view of the handpiece assembly 100depicted in FIG. 3A. In the illustrated embodiment, a cartridge 200 hasbeen secured within a recess 111 or other receiving area of thehandpiece assembly 100. The size, shape, location and/or other detailsof the recess 111 can vary, depending on the size of the cartridge 200that will be inserted therein or as otherwise required or desired. Asshown in FIG. 3A, the cartridge 200 can include a main cylindricalportion 206 and a nozzle portion 210. In some arrangements, the nozzleportion 210 comprises a septum 214, membrane or other member that can bepierced, punctured or otherwise compromised to access the interiorcontents of the cartridge 200 (e.g., serum, other liquids or materials,etc.). The septum 214 can include one or more flexible, rigid and/orsemi-rigid materials, such as, for example, rubber, plastic, paperand/or the like.

The cartridge 200 can include one or more suitable materials, such as,for example, glass, metals (e.g., stainless steel), plastic, othersynthetic or natural materials and/or the like. In some embodiments, forinstance, a nozzle portion 210 comprising aluminum or other metal iscrimped onto a glass main cylindrical portion 206 of the cartridge 200.However, the nozzle portion 210 and the main cylindrical portion 206 ofthe cartridge 200 can comprise any other materials. However, the nozzleportion 210 can be attached to the cylindrical portion 206 using one ormore other methods or devices, such as, for example, a threadedconnection, snap connection, adhesives, other fasteners and/or the like.In still other embodiments, the cartridge 200 may include more or fewerportions, compartments, features and/or the like, as desired orrequired.

With continued reference to FIG. 3B, the interior of the recess 111 ofthe handpiece assembly 100 can comprise a hollow spike 126 or otherpiercing member. As shown, the spike 126 can be sized, shaped,positioned and otherwise configured to penetrate the septum 214,membrane or other member of a cartridge 200 when a cartridge 200 ispushed sufficiently far within the recess 111. In other embodiments, thespike 126 or other member can be adapted to access an interior portionof a cartridge 200 in one or more other ways. Accordingly, once thecartridge 200 has been properly inserted into the handpiece assembly 100and the septum 214 of the cartridge 200 has been compromised, the hollowspike 126 can be placed in fluid communication with the interiorcontents (e.g., human growth factors, cytokines, soluble collagen,antioxidants, matrix proteins, serums, salicylic acid, other anti-acneacids and materials, microcapsules, capsules, other time-releaseproducts and substances, water (e.g., distilled, tap water, filtered,etc.), saline, other dilutants or dissolvents, vitamins, chemicalexfoliation agents, lotions, soothing agents, brightening or lighteningagents, peptides, peeling agents, acids, anesthetics, medicants, othernon-active or active compounds, other fluids or materials, combinationor mixtures thereof and/or any other substance, etc.) of the cartridge200. In other arrangements, as discussed in greater detail herein, thecartridge 200 can comprise water, saline, other dilutants or dissolventsand/or other fluids that can be selectively delivered to the tip 160 todissolve, dilute and/or otherwise come in contact with one or moresolids, granular materials, gels, concentrated solution and/or othersubstances positioned within, on and/or near the tip or other portion ofa handpiece assembly.

In the illustrated embodiment, the spike 126 includes an angled orsloped tip 128 to further facilitate the piercing or puncturing of thecartridge's septum 214 or other sealing member. Although not illustratedherein, the handpiece assembly 100 can include one or more other needlesthat are configured to penetrate into the interior of a cartridge 200.For example, one or more vent needles can be used to facilitate theremoval of fluids and/or other materials from a cartridge 200 which hasbeen loaded into a handpiece assembly 100.

As discussed, the cartridge 200 can be sized, shaped and otherwiseconfigured to snugly or generally snugly fit within the handpieceassembly 100. Therefore, in some arrangements, the cartridge 200 issecured to the handpiece assembly 100 by friction or by the generallytight tolerances of the recess 111 of the handpiece assembly 100. InFIG. 3B, the friction between spike 126 and the septum 214 or othersealing member can help maintain the cartridge 200 within the handpieceassembly 100.

In other embodiments, however, a cartridge 200 can be secured to one ormore other portions of a handpiece assembly 100. In addition, thehandpiece assembly 100 can include one or more other methods or devicesfor securing a cartridge 200. For example, the handpiece assembly 100can include tabs, flanges, other protrusion members and/or any otherfeatures or items that help positively engage one or more portions ofthe cartridge 200 positioned therein. In some embodiments, delivery of acartridge 200 to a desired depth of the recess 111 or other receivingarea of the handpiece assembly 100 can produce an audible click, apositive engagement mechanism and/or the like. Such features can helpnotify the user that a cartridge 200 has been property secured withinthe handpiece assembly 100. In other arrangements, a separate device,such as, as a locking cap, strap or other member can be used to ensurethat the cartridge 200 remains in fluid communication with the spike 126and within the recess 111 or other desired receiving location of thehandpiece assembly 100 during use.

FIG. 4A illustrates a cross-sectional view of the handpiece assembly 100comprising a spike 126 that is in fluid communication with the interior201 of a cartridge 200. As shown, a delivery conduit 124 can be used toplace the spike 126 in fluid communication with an intermediate regionor space 142 generally formed between the main body portion 110 and theadjustable distal portion 130. One or more O-rings 144 or other sealingmembers can be used to ensure that fluid remains within thisintermediate region 142. Further, the handpiece assembly 100 can beconfigured so that a user can selectively modify the size of theintermediate region 142. For example, as illustrated by the differencesbetween FIGS. 4A and 4B, rotation of the adjustable distal portion 130relative to the main body portion 110 can alter the width 143A, 143B ofthe intermediate region 142. In some embodiments, rotation of theadjustable distal portion 130 relative to the main body portion 110causes the two portions 130, 110 to move closer to or further apart fromeach other, depending on the direction of rotation. Consequently, thewidth 143A, 143B, and thus the overall size, of the intermediate region142 can be selectively varied by a user during a treatment procedure, asdesired or required.

In some embodiments, the longitudinal axes of the delivery conduit 124and the spike 126 can be offset (e.g., generally not aligned) with eachother. This can permit the width 143A, 143B or other separation distancebetween the main body portion 110 and the adjustable distal portion 130to be selectively varied. As discussed in greater detail herein, thiscan help modify the hydraulic characteristics of fluids and/or othermaterials being conveyed from the spike 126 to the delivery conduit 124,and thus, from a cartridge 200 or other fluid source to the tip 160 ofthe handpiece assembly 100. In some embodiments, the longitudinal axesof the delivery conduit 124 and the spike 126 remain offset as theadjustable distal portion 130 is rotated or otherwise moved relative tothe main body portion 110.

In the illustrated embodiment, the distance between the recessed annularring 118 of the main body portion 110 and the interface 119 between themain body portion 110 and the adjustable distal portion 130 variesdepending on the circumferential position of the annular ring 118. Inother words, by rotating the adjustable distal portion 130 relative tothe main body portion 110, the distance between these portions 130, 110can be selectively adjusted.

With continued reference to FIG. 4A, the adjustable distal portion 130can include a delivery channel 140 or other conduit that places theintermediate region 142 in fluid communication with the tip 160.However, in order for serums or other materials to be delivered from theintermediate region 142 to the tip 160, a fluid path must be createdbetween the intermediate region 142 and the delivery channel 140 throughthe adjustable distal portion 130. In FIG. 4A, there is little or nospace between the distal portion 130 and the main body portion 110.Therefore, fluids or other materials will be prevented or severelylimited from flowing from the intermediate region 142, and thus thecartridge 200, to the tip 160 of the handpiece assembly 100.

Alternatively, as illustrated in FIG. 4B, when sufficient separationexists between the adjacent surfaces of the adjustable distal portion130 and the main body housing 110, a flow path is created from theintermediate region 142 to the delivery channel 140 of the distalportion 130. Accordingly, serums and/or other fluids or materials can beconveyed from the cartridge 200 toward the tip 160 of the handpieceassembly 100. Accordingly, by rotating the adjustable distal portion 130relative to the main body housing 110, as discussed herein, the flowrateof liquids and/or other materials from the cartridge 200 toward the tip160 can be selectively regulated.

With continued reference to FIGS. 1 and 3A, the adjustable distalportion 130 can include a setting indicator 132 along its exteriorsurface, near the interface of the adjustable distal portion 130 and theadjacent main body portion 110. Likewise, the main body portion 110 caninclude a plurality of corresponding markers 112A-112D with which theindicator 132 of the distal portion 130 can align. In the illustratedembodiment, the main body portion 110 comprises a total of four markers112A-112D, each corresponding to a different flowrate setting throughthe handpiece assembly 100. However, a handpiece assembly 100 caninclude more or fewer indicators 132 and/or markers 112A-112D, asdesired or required by a particular application or use. As discussed,rotation of the adjustable distal portion 130 relative to the main bodyportion 110 can vary the distance between the two portions 110, 130.Thus, the flow path for serums and/or other fluids or materials throughthe handpiece assembly 100 can be adjusted.

In the embodiment illustrated in FIGS. 1 and 3A, the markers 112A-112Dalong the outside of the main body portion are generally circular inshape. Further, the diameter of each of the markers 112A-112D variesdepending on the relative flowrate through the handpiece assembly 100 towhich each marker corresponds or relates. For example, in someembodiments, the larger markers represent a greater separation distancebetween adjacent surfaces of the adjustable distal portion 130 and themain body portion 110, and thus, a relatively higher flowrate of fluidsand/or other materials from the cartridge 200 through the handpieceassembly 100 to the tip 160. As shown, the handpiece assembly 100 can beconfigured so that a user selects a flowrate setting by aligning thesetting indicator 132 on the distal portion 130 with the desired marker112A-112D on the main body portion 110. In accordance with thearrangements disclosed herein, this can be accomplished by rotating theadjustable distal portion 130 relative to the main body portion 110.

However, a handpiece assembly 100 can include one or more other methodsof selecting a desired flowrate of fluids and/or other materialstherethrough. For example, in some embodiments, the handpiece assembly100 includes one or more dials, knobs, buttons and/or other devices orfeatures for adjusting the flowrate. Such controllers can be graduatedso as to permit a user to select a specific flowrate or relative flowsetting (e.g., “HIGH,” “MEDIUM,” “LOW,” etc.). In other arrangements,the handpiece assembly 100 comprises a display (e.g., LED, LCD, etc.)that is adapted to provide information regarding a current flowrate orsetting. Further, such a display can be configured to permit users tomake flowrate adjustments (e.g., touchscreen display). Further,selection devices or features (e.g., knobs, buttons, dials, etc.) and/ordisplays can be positioned on the handpiece assembly 100. Alternatively,the controllers can be separate from the handpiece assembly. Forexample, such devices or features can be connected to the assemblythrough one or more hardwired and/or wireless connections (e.g., cable,Ethernet line, radio frequency, Bluetooth, Wi-Fi, etc.).

In other embodiments, a handpiece assembly 100 includes one or moredifferent methods and/or devices for controlling the flowrate of fluidsor other materials from a cartridge 200 toward the tip 160. For example,the handpiece assembly 100 can comprise different types of flow controlvalves or devices than those disclosed herein. Regardless of the exactflow control method or device used, it may be desirable to provide userswith the ability to selectively regulate the rate at which serums, otherfluids or materials and/or the like are delivered from a cartridge 200to the tip 160 of the handpiece assembly 100. This can further enhance aparticular skin treatment procedure by allowing a desired volume offluids or other materials to be delivered to the treatment surface(e.g., skin-tip interface). For instance, during the initial exfoliationphase, a relatively high volume of serum or other lubricating fluids maybe desired. However, during subsequent stages of a treatment procedure,a reduced flowrate of fluids and/or other substances may be desired orrequired.

With continued reference to FIG. 3B, the tip 160 can include an internaldelivery stem 164 or other conduit that is configured receive fluidsand/or other substances from the delivery channel 140 of the adjustabledistal portion 130 and convey them to the distal end 161 of the tip 160.As illustrated in FIGS. 3B, 4A and 4B, the internal stem 164 of the tip160 can be sized, shaped and otherwise configured to be in fluidcommunication with the delivery channel 140 extending through theinterior of the distal portion 130. In some embodiments, a handpieceassembly 100 includes two or more internal delivery channels 140 orother conduits through which fluids and/or other materials may beconveyed. Likewise, the tip 160 can include additional delivery stems164 or other conduits configured to transfer fluids and/or othermaterials toward the distal end 161 of the tip 160.

As depicted in FIG. 3B, the tip 160 can include one or more removalconduits 168A. According to certain embodiments, such conduits 168A arealso in fluid communication with the distal end 161 of the tip 160. Theremoval conduits 168A can be advantageously sized, shaped, located andotherwise configured to transfer exfoliated skin, spent serums and otherwaste materials away from the treatment surface. In some arrangements, atip 160 comprises a plurality of removal conduits 168A located at ornear the tip periphery. However, in other embodiments, the quantity,spacing, location and other details of the removal conduits 168A canvary, as desired or required by a particular application or use.

With continued reference to the cross-sectional views of FIGS. 3B, 4Aand 4B, exfoliated skin, spent serums, other fluids and/or any othermaterials can be transferred from the distal end 161 of the tip 160 to acommon collection area 152 located at or near a proximal end of the tip160. According to some embodiments, the collection area 152 ispositioned at or near the location where the tip 160 attaches to theadjustable distal portion 130. Accordingly, exfoliated skin, spent orwaste fluids and/or other materials can be delivered into one or moreremoval channels 150 of the distal portion 130. In addition, the mainbody portion 110 can include one or more waste channels 120 or conduitsthat are configured to be in fluid communication with the removalchannels 150 of the distal portion 130. In the depicted embodiments, acavity 122 or other common area is used to place the channels 120 of themain body portion 110 in fluid communication with the removal channels150 of the distal portion 130. Such a cavity or other common area can belocated at or near the interface of the adjacent portions 110, 130 ofthe handpiece assembly 100. Further, the cavity 122 can beadvantageously configured to maintain the waste channel 120 in fluidcommunication with the removal channel 150 throughout the entire rangeof relative movement between the main body portion 110 and theadjustable distal portion 130. As shown, the cavity 122 or other commonarea can comprise an annular region that completely or partially extendsaround an interior portion of the handpiece assembly 100.

In some embodiments, the main body portion 110 of the handpiece assembly100 includes a discharge nozzle 180 or port. As illustrated in FIG. 3B,the nozzle 180 can include a threaded portion 182 that attaches to thehandpiece assembly 100. The nozzle can further include a fittinggenerally opposite of the threaded portion 182 that is shaped, sized andotherwise configured to receive tubing 190 or some other fluid line orconduit. The nozzle 180 can comprise a different shape, size or generaldesign than illustrated in FIG. 3B. In addition, the nozzle 180 can beadapted to connect to the handpiece assembly 100 and/or tubing 190 (orfluid conduits) using other methods or devices. For example, the nozzle180 can form a generally uniform structure with an adjacent portion ofthe handpiece assembly 100. According to another arrangement, the nozzle180 includes a quick-connect fitting to facilitate connection to and/orremoval from a waste conduit (e.g., rubber or other flexible tubing,hose or other line). Regardless of its exact shape, size, method ofattachment and/or other characteristics or details, the nozzle 180 canbe advantageously configured to place the handpiece assembly 100 influid communication with a vacuum or other suction source (e.g., via thetubing 180 or other conduit) that can selectively remove exfoliatedskin, spent serums other fluids and/or any other materials away from theskin surface being treated.

According to some embodiments, the conduit 190 or other channel (e.g.,flexible tubing or hose) to which the handpiece assembly 100 connect arein fluid communication with a vacuum or other suction source (e.g.,pump, other fluid transfer device, etc.). Thus, exfoliated skin, spentfluids and/or other waste materials can be transported away from thedistal end 161 of the tip 160 to a canister (not shown) or other wastesource. The rate of transfer of such waste materials can depend on oneor more factors, such as, for example, the setting of the vacuum orsuction source, the characteristics (e.g., diameter, length, smoothness,etc.) of the various conduits or channels 168A, 150, 120, 180, 190through which the waste materials are conveyed, the viscosity, densityand other fluid properties of the waste materials and/or the like.

According to some embodiments, a handpiece assembly 100A can include aclamshell design. For example, in the arrangement illustrated in FIGS.4C-4E, the housing of the handpiece assembly 100A comprises two halves110A, 111A that are sized, shaped and otherwise configured to removablymate with one another. As shown in FIGS. 4C and 4D, the two portions110A, 111A of the handpiece assembly housing can be secured to eachother using screws 112A or other fasteners. Alternatively, the variousportions of the housing can be secured to each other using any otherattachment device or method, such as, for example, welds, adhesives,clips, tabs, rivets, press fit connections, friction fit connections,snap fit connections and/or the like.

Such a split configuration, in which the internal components arepositioned between the two or more separate portions, can facilitate themanufacture and assembly of a handpiece assembly 100A. For example, theseparate housing portions 110A, 11A can be advantageously manufacturedusing an injection mold or other molding or casting process (e.g.,compression molding, thermoforming, etc.). This can permit the handpiecehousing to be manufactured relatively inexpensively, quickly andefficiently. The housing can comprise any rigid or semi-rigid material,such as, for example, thermoplastic, metal, alloy and/or the like.

As discussed herein, in some embodiments, the flow of serums, otherfluids and/or any other materials from a cartridge 200B or other sourcethrough the handpiece assembly 100A can be regulated by the user usingone or more valves. In FIGS. 4C-4E, the flowrate of such fluids and/orother materials through the handpiece assembly 100A can be controlledusing a needle valve 120A or similar flow control device or feature.Therefore, according to some embodiments, the need to provide a housinghaving a movable portion that is configured to rotate relative to astationary portion (e.g., FIGS. 1-4B) can be eliminated.

With continued reference to FIGS. 4C-4E, a user can easily adjust thedelivery of serums and/or other fluids or materials toward the tip 160Aby operating a handle or tab 122A of the valve 120A. As illustrated inFIGS. 4C and 4D, the handle or tab 122A is configured to rotate orotherwise move within a corresponding slot 123A of the handpiecehousing. In some embodiments, the handle or tab 122A is resilientlybiased (e.g., in the fully open position, in the fully closed position,an intermediate position, etc.), as desired or required. According tosome arrangements, the use of such a needle valve or other valveassembly within the handpiece assembly 100A can simplify the overalldesign of the assembly 100A, allow for more accurate delivery of fluidsand/or other materials through the handpiece assembly and/or provide oneor more other benefits or advantages. Such a needle valve with anexternal handle or controller can be incorporated into any of theembodiments disclosed herein, including, for example, the handpieceassemblies discussed herein with reference to FIGS. 24-48. For example,as discussed in greater detail below, a needle valve or other flowcontrol feature 3822′ can be included in the handpiece assemblyillustrated in FIG. 42.

As illustrated in FIG. 4E, the handpiece assembly 100A can be configuredto receive a removable cartridge 200B within its recessed proximalportion. Alternatively, the handpiece assembly 100A can be adapted toreceive a supply cartridge 400B that is in fluid communication with oneor more separate fluid and/or other material sources. For example, thesupply cartridge 400B can include a fluid line 420B that is connected toa larger fluid supply (e.g., a bottle, reservoir, etc.), a manifoldand/or the like. Thus, fluids and/or other materials can be easily andconveniently delivered into and through the handpiece assembly 100Ausing such a supply cartridge 400B. The use of supply cartridges 400Bcan reduce the frequency of replacing separate cartridges 200B withinthe handpiece assembly.

With continued reference to FIG. 4E, the supply cartridge 400B caninclude a main body portion 402B that is sized, shaped and otherwiseconfigured to fit within a corresponding recess of the handpieceassembly 100A. The distal end of the cartridge 400B can include a heador neck 410B portion that is adapted to receive the puncturing spike126A of the handpiece assembly 100A when properly inserted therein. Inany of the embodiments disclosed herein, or equivalents thereof, asupply cartridge or any other cartridge configured for placement withina handpiece assembly can include a check valve (or other one-way valve)414B, a septum and/or the like. For example, as illustrated in FIG. 4E,the head 410B of the supply cartridge 400B comprises a one-way valve414B that helps prevent fluids and/or other materials from leaking outof the internal passage 430B of the cartridge 400B when the cartridge400B is removed from the handpiece assembly 100A. In some embodiments,such a one-way valve 414B is held in place using an adjacent septum orother securement member or feature.

FIG. 4F schematically illustrates one embodiment of a handpiece assembly100′ which comprises a cartridge 200′ and which is in fluidcommunication with a vacuum V or other suction source. In the depictedarrangement, the vacuum V is configured to remove waste materials fromthe tip 160′ and help deliver serums, other fluids and/or any othermaterials from the cartridge 200′ to the tip 160′. When the tip 160′ ispositioned against the skin S being treated, suction created by thevacuum source V can be transmitted to the delivery channel 140′ of theassembly 100′. In some embodiments, such a suction force within thedelivery channel 140′ remains intact as long as the tip 160′ ismaintained against or substantially against the skin S. Consequently,the suction force can be transferred to the delivery channel 140′ via anenclosed or substantially enclosed area A near the working surface ofthe tip 160′.

With continued reference to FIG. 4F, human growth factors, cytokines,soluble collagen, antioxidants, matrix proteins, serums, salicylic acid,other anti-acne acids and materials, microcapsules, capsules, othertime-release products and substances, water (e.g., distilled, tap water,filtered, etc.), saline, other dilutants or dissolvents, vitamins,chemical exfoliation agents, lotions, soothing agents, brightening orlightening agents (e.g., kojic acid), peptides, peeling agents, acids,anesthetics, medicants, other non-active or active compounds, otherfluids or materials, combination or mixtures thereof and/or any othersubstance situated within a cartridge 200′ can be placed in fluidcommunication with the delivery channel 140′ using a spike 126′ or othermember. A valve F or other flow control device or mechanism can be usedto regulate the rate at which such fluids and/or other materials aretransferred to the tip 160′. For example, the handpiece assembly 100′can comprise a main body portion that is movable (e.g., rotatable)relative to a distal portion as disclosed herein with reference to FIGS.1-3B and 5A. As discussed, the relative movement of these portions canhelp regulate the flowrate of serums, other fluids and/or othermaterials from the cartridge 200′ to the tip 160′ of the handpieceassembly 100′. In alternative embodiments, as discussed in greaterdetail herein, the delivery channel 140′ can be configured to conveywater, saline, other dilutants or dissolvents and/or other fluids fromthe cartridge 200′ to the tip 160′. Accordingly, solid materials, gels,other concentrated materials and/or other substances positioned on ornear the tip 160′ can be advantageously mixed or combined with thesefluids to produce a desired and/or required effect.

In other embodiments, however, the contents of a container 200′ aretransferred to the tip 160′ using one or more other methods or devices,either in addition to or in lieu of the methods discussed herein withreference to FIG. 4F. For example, the handpiece assembly 100′ cancomprise an internal pump or other fluid transfer device that isconfigured to convey serums, other fluids and/or other materials fromthe cartridge 200′ to the tip 160′. In other embodiments, the internalcontents of the cartridge 200′ are configured to, at least partially,gravity flow toward the tip 160′ of the assembly 100′. One or more otherways of transferring fluids and other materials to the tip 160′ of thehandpiece assembly 100′ can be used, either in lieu of or in combinationwith methods and devices disclosed herein.

In any of the embodiments of a handpiece assembly disclosed herein,including but not limited to those illustrated and discussed withreference to FIGS. 1, 2A, 2B, 3A, 3B, 4A-4F, 5A-5C, 7, 14A, 16A, 17,18A, 18B, 19A, 19B, 20A-20D, 21A and 21B, or variations thereof, thedirection of flow through the various channels, conduits and/or otherhydraulic components of the tip, handpiece assembly and other componentsof a skin treatment system can be reversed. By way of example, in thearrangement shown in FIGS. 1-4B, the handpiece assembly 100 can bedifferently configured so that spent fluids, exfoliated skin, debris andother waste materials are removed away from the skin through a centrallylocated opening in the tip (e.g., the delivery stem 164) and/or acentrally located channel (e.g., the delivery channel 140) of thehandpiece assembly 100. In such embodiments, one or more of the fluidchannels, connectors and/or other fluid lines may need to bereconfigured to adequately place the centrally-located removal openingof the tip in fluid communication with a vacuum or other suction source,as desired or required.

Further, the serums, other fluids and/or other materials can bedelivered to the tip 160 (e.g., from a cartridge, an external source,etc.) through one or more peripheral or other non-centrally locatedchannels, conduits and/or other lines or fittings. For instance, in thehandpiece assembly 100 illustrated in FIGS. 1-4B, such fluids and/orother materials can be routed through channels 150 of the assemblyand/or waste conduits 168A of the tip 160. Thus, one or more of thechannels, connectors and/or other hydraulic components may need to bereconfigured to adequately place the non-centrally located deliveryopenings of the tip in fluid communication with corresponding deliverylines of the handpiece assembly 100.

Accordingly, in any of the embodiments disclosed herein, water (e.g.,distilled, tap water, sterile, filtered, etc.), saline, serums,salicylic acid, other anti-acne acids and materials, microcapsules,capsules, other time-release products and substances, growth factors,other dilutants, other solutions, mixtures or fluids and/or the like canbe delivered to the tip through one or more centrally and/ornon-centrally located (e.g., peripheral, offset, etc.) openings. Thus,the flow pattern of such fluids and/or other materials across the tip(e.g., from the tip inlet to the tip outlet) can be advantageouslycontrolled as desired or required for a particular application or use.For instance, in some embodiments, it may be desirable to introducefluids and/or other materials through one, two or more peripheral ornon-centrally located openings (e.g., 572A, 572B) of a tip (e.g., 560 ofFIG. 8A), and to collect the spent fluids, removed skin, other debrisand other waste materials through a centrally-located opening (e.g.,570).

FIG. 5A illustrates a partial exploded view of another embodiment of ahandpiece assembly 100B. As with the arrangement of FIG. 3A, thedepicted handpiece assembly 100B can be configured to receive aremovable tip 160B along its distal end. Further, as with otherembodiments discussed and illustrated herein, the handpiece assembly100B can include an adjustable distal portion 130B that is selectivelymovable (e.g., rotatable) relative to the adjacent main body portion110B. Such relative rotation or other movement can advantageously permita user to regulate the flow of serums, salicylic acid, other anti-acneacids and materials, microcapsules, capsules, other time-releaseproducts and substances, chemical exfoliation compounds or mixtures,antioxidants, growth factors, lotions, vitamins, medicants, brighteningor lightening agents, peptides, peeling agents, acids, other active ornon-active agents, water (e.g., distilled, tap water, filtered, sterile,etc.), saline, other dilutants, other fluids or materials and/or thelike being delivered to the tip 160B of the handpiece assembly 100B.

In FIG. 5A, the adjustable distal portion 130B of the handpiece assembly100B comprises a nozzle 166B or other member that helps place the tip160B in fluid communication with a vacuum source and/or a fluid deliverysource. In some embodiments, the tip 160B is advantageously designed toreceive or otherwise accommodate the nozzle 164B. For example, asillustrated in FIG. 5B, an interior portion of the tip 160B can includea recess 164B that is shaped, sized and otherwise configured to receivethe nozzle 166B of the adjustable distal portion 130B. As shown, thehandpiece assembly 100B and/or the tip 160B can include one or moreO-rings 154B, 155B, gaskets and/or other sealing members or devices tohelp reduce or eliminate the likelihood of leaks as fluids and othermaterials are transferred between the handpiece assembly 100B and thetip 160B. The tip 160B can be secured to the distal end of the handpieceassembly 100B using a friction connection, a threaded connection, a snapconnection, another type of mechanical connection and/or any other typeof attachment device or method.

Such configurations in which the distal end of a handpiece assemblycomprises a nozzle, fitting or other protruding member that is adaptedto be secured within a corresponding recess, other feature or other areaof the tip can be incorporated into any of the handpiece assembly and/ortip embodiments disclosed herein, or variations thereof. As discussed ingreater detail herein, such a nozzle-recess connection can be configuredto place the tip in fluid communication with either a suction source ora fluid delivery source, as desired or required. One or more additionalopenings, conduits, channels and/or other hydraulic components in thetip and/or the handpiece assembly can be configured to transfer fluidsand/or materials to and/or from the tip.

With reference to the cross-sectional view of FIG. 5C, once the tip 160Bhas been properly secured to the handpiece assembly 100B (e.g., to theadjustable distal portion 130B), the distal end of the tip 160B can beplaced in fluid communication with one or more delivery channels 150Band/or waste channels 140B of the handpiece assembly 100B. For example,in the embodiment depicted in FIG. 5C, serums, salicylic acid, otheranti-acne acids and materials, microcapsules, capsules, othertime-release products and substances, water (e.g., distilled, tap water,filtered, etc.), other dilutants, other fluids or materials and/or thelike can be delivered to the tip 160 through a delivery conduit 150B ofthe handpiece assembly 100B, through a common area C (e.g., locatedbetween the tip 160B and the adjustable distal portion 130B of thehandpiece assembly 100B) and through two peripherally located deliveryconduits 168B of the tip 160B. In addition, waste materials can beremoved from the tip through a centrally-located opening and recess 164Bof the tip 160B and a waste channel of the handpiece assembly 100B.However, as discussed, in alternative embodiments, the direction of flowthrough such channels, conduits and/or other hydraulic components of thetip 160B and/or the handpiece assembly 100B can be reversed or otherwisevaried, as desired or required.

FIG. 6A illustrates a side view of one embodiment of a cartridge 300configured to be secured within or onto a handpiece assembly asdisclosed herein. The cartridge 300 can include a main cylindricalportion 306 and a nozzle portion 310 or closure. As illustrated in FIG.6C, the closure 310 can comprise a septum 314, membrane or other memberthat can be pierced, punctured or otherwise compromised to access theinterior contents of the cartridge 300 (e.g., serum, other liquids ormaterials, etc.). In some embodiments, for example, the septum 314 orother member is adapted to be selectively pierced or punctured by ahollow spike, needle or similar device when the cartridge 300 isinserted into the handpiece assembly. As discussed, the septum 314 caninclude one or more flexible materials, such as, for example, rubber,plastic, paper and/or the like.

For any embodiments of a cartridge, vial or other container disclosedherein, the septum 314, membrane or other surface configured to bepierced, punctured or otherwise compromised can be re-sealable. In otherwords, such a septum 314 can be adapted to re-seal the internal contentsof the cartridge 300 when the cartridge is removed from the handpieceassembly. Therefore, leakage of serums, other fluids and/or othermaterials contained within a cartridge can be reduced or prevented. Inaddition, the septum 314 can help ensure against contamination of theinternal contents by preventing one or more materials from entering thecartridge.

As discussed, cartridges configured to be secured within a handpieceassembly can include any combination of serums, salicylic acid, otheranti-acne acids and materials, microcapsules, capsules, othertime-release products and substances, human growth factors, cytokines,collagen, brightening or lightening agents, peptides, peeling agents,acids, antioxidants, matrix proteins, saline, water (e.g., distilled,tap water, filtered, etc.) and/or other liquids or substances, asdesired or required by a particular application or use. In certainembodiments, a treatment protocol may require the use of one, two ormore different cartridges for a specific procedure. Thus, cartridges canbe removed from or inserted into a handpiece assembly prior to or duringa particular procedure.

Another embodiment of a cartridge 400 that is sized, shaped andotherwise configured for placement within a handpiece assembly isillustrated in FIG. 6B. As shown, the cartridge 400 can include a tip410 and a main tubular portion 406. With reference to the front view ofFIG. 6D, at least a portion of the end surface 414 of the tip 410 caninclude one or more septa, membranes or other layers or members that areconfigured to be pierced, punctured or otherwise compromised by a spikeor other protruding member when the cartridge 400 is secured in ahandpiece assembly.

With continued reference to FIG. 6B, the cartridge 400 can include aninternal channel 420 that is adapted to be in fluid communication with atubular spike or other protruding member of the handpiece assembly whena surface 414 of the cartridge 400 is pierced or punctured (e.g., whenthe cartridge 400 is properly inserted within a handpiece assembly). Insome embodiments, as illustrated in FIG. 6B, the cartridge 400 includesa nozzle 430 or other fitting that is sized, shaped and otherwiseconfigured to receive or connect to a fluid line 450 or other conduit.For example, in the depicted arrangement, the nozzle 430 includes a port438 to which tubing or some other fluid conduit 450 can attach. In someembodiments, the nozzle 430 is secured to the cartridge 400 using athreaded connection 434. However, one or more other types of methods ordevices can be used to join the nozzle 430 to the cartridge 400. Inother embodiments, the cartridge 400 and the nozzle 430 form a generallyunitary structure (e.g., molded as a single member).

A cartridge 400, such as the one illustrated in FIG. 6B, canadvantageously permit a user to deliver human growth factors, cytokines,soluble collagen, antioxidants, matrix proteins, serums, salicylic acid,other anti-acne acids and materials, microcapsules, capsules, othertime-release products and substances, water (e.g., distilled, tap water,filtered, etc.), saline, other dilutants or dissolvents, vitamins,chemical exfoliation agents, lotions, soothing agents, brightening orlightening agents, peptides, peeling agents, acids, anesthetics,medicants, other non-active or active compounds, other fluids ormaterials, combination or mixtures thereof and/or any other substance toa handpiece assembly from one or more external fluid sources. Forexample, in some embodiments, the conduit 450 to which the cartridge 400is connected, is placed in fluid communication with one or morecontainers. Such containers can comprise the desired serums, salicylicacid, other anti-acne acids and materials, microcapsules, capsules,other time-release products and substances, human growth factors,cytokines, collagen, antioxidants, matrix proteins, brightening orlightening agents, peptides, peeling agents, acids, medicants, otherfluids or substances, combinations thereof and/or the like, as desiredor required by a particular treatment. Thus, the cartridge 400 can beused as an interface between the handpiece assembly and a relativelylarger source of treatment media. For example, the cartridge 400 can beplaced in fluid communication with a multi-container system such as theone disclosed in U.S. patent application Ser. No. 11/392,348, filed onMar. 29, 2006 and published on Jul. 5, 2007 as U.S. Publication2007/0156124, the entirety of which is hereby incorporated by referenceherein.

According to certain arrangements, a cartridge 400 includes one or moresolids, granular materials, gels, concentrated fluids and/or othersubstances that are adapted to dissolve, dilute, soften or otherwise mixwhen contacted by water, saline, other dilutants or dissolvents and/orother fluids. Thus, such materials or other substances can be placedwithin the cartridge 400 in one or more forms, such as, for example, aspowder, granular material, a tablet, a capsule, a pill, otherdissolvable solid, a concentrated solution, a gel and/or the like. Inother embodiments, such solids, gels and/or other materials can besituated on the tip or other portion of the system (e.g., within a postor recess, adhered to one or more other exposed or hidden surfaces,within a removable cartridge upstream of the handpiece assembly asillustrated, for example, in FIG. 18A, etc.), impregnated into a foampad or other member (see, as depicted in FIGS. 19A, 19B and 20A-20C)and/or at any other location. Regardless of their exact composition,location and/or other details, such materials and/or other substancescan be configured to dissolve, dilute and/or otherwise mix with water,saline and/or other fluids being conveyed through the cartridge 400.

As discussed, in any of the embodiments of the cartridge (e.g., vial,ampoule, other standard or non-standard container, etc.) disclosedherein, the cartridge can be configured to releasably lock or otherwisesecure to one or more portions of a handpiece assembly (e.g., recess).In other embodiments, a cartridge includes threads, tabs, slots and/orother features that are configured to engage corresponding portions ofthe handpiece assembly. In alternative arrangements, the cartridge isadapted to remain within a receiving portion of the handpiece assemblyby friction or some other mechanism or feature, as desired or required.

In any of the embodiments disclosed herein, a cartridge configured to beremovably positioned within a corresponding recess of a handpieceassembly can comprise a piston or other movable member within itsinterior. Accordingly, the internal volume of the cartridge containingthe fluid and/or other material to be selectively delivered to thehandpiece assembly can be reduced as fluid and/or other material isexpelled from the cartridge. This can help ensure that the internalportion of the cartridge that contains the serum, other liquid and/orother material to be delivered to the handpiece assembly does notinclude air or other gases. Thus, the treatment media can beconsistently and reliably maintained at the distal end of the cartridgeinterior (e.g., toward the cartridge outlet) during a treatmentprocedure, regardless if and how a user tilts or otherwise maneuvers thehandpiece assembly.

One embodiment of a cartridge 300A having an internal piston 320A orother movable device is illustrated in FIGS. 6E-6G. As shown, the piston320A can urge the internal contents of the cartridge 300A (e.g., serum,other treatment fluids or materials, etc.) toward the distal end 310A ofthe cartridge 300A. As noted above, the use of such an airless pumpdesign can eliminate or reduce the likelihood that air or other gaseswill interfere with the consistent delivery of such fluids and/or othermaterials to the handpiece assembly.

With continued reference to FIGS. 6E-6G, the handpiece assembly 300A canadditionally include a neck portion 310A that is advantageouslyconfigured to lockingly engage a corresponding portion of the handpieceassembly. For example, the neck portion 310A of the cartridge 300A caninclude slots 312 or recesses that are configured to mate and secure tocorresponding protrusions within the interior of the handpiece assemblyrecess. Thus, once the cartridge 300A has been properly secured withinthe recess of handpiece assembly, the cartridge 300A can be rotated(e.g., quarter revolution, half revolution, etc.) or otherwise moved tolockingly secure the cartridge to the handpiece assembly. Sucharrangements can ensure that the cartridge is not accidentallydisconnected from the handpiece assembly during use. In order to removethe cartridge from the handpiece assembly, a user can rotate thecartridge in the opposite direction relative to the handpiece assemblyto unlock or disengage the cartridge from the handpiece assembly. Anyother temporary or permanent locking mechanism or feature can be used,either in lieu of or in addition to the recess or slots illustrated inFIGS. 6E-6G. Such features can be incorporated into any of theembodiments illustrated and discussed herein, or equivalents thereof.

According to certain embodiments, as illustrated in FIG. 7, thecartridge 400 is placed in fluid communication with a manifold system460 that may comprise a plurality of individual fluid lines 462, 464,466, 468. In turn, one or more of these fluid lines 462, 464, 466, 468can be in fluid communication with a separate container (not shown). Inthe illustrated embodiment, all the individual fluid lines 462, 464,466, 468 feed into the main fluid line 450, which connects to the nozzle430 of the cartridge 400. One or more of the fluid lines 450, 462, 464,466, 468 can comprise a valve 472, 474, 476, 478 or other flow controldevice or feature to selectively regulate the transfer of fluids and/orother materials to the handpiece assembly 100. In the illustratedarrangement, the manifold system 460 comprises a total of four fluidbranches 462, 464, 466, 468. However, a system can comprise more orfewer fluid branches, as desired or required by a particularapplication.

According to certain embodiments, one or more of the fluid lines fluidlines 450, 462, 464, 466, 468 of the system schematically illustrated inFIG. 7 are configured to provide water (e.g., distilled, tap water,filtered, etc.), saline, other dilutants or dissolvents, other fluidsand/or the like to the handpiece assembly 100. As discussed in greaterdetail herein, such fluids can be adapted to contact and dissolve,dilute, liquefy, soften and/or otherwise mix with one or more solids,gels and/or other materials positioned within or on various surfaces orportions of the handpiece assembly 100 (e.g., tip). This can provide aconvenient method of providing one or more materials at the skin-tipinterface and/or any other location where such materials are desired orrequired.

FIGS. 8A-8F illustrate different views of one embodiment of a removabletip 560 configured for placement on a handpiece assembly as disclosedherein. As shown, the tip 560 can include a tip body portion 563 and atip skirt portion 562 extending along the bottom of the tip body portion563. According to certain embodiments, the skirt portion 562 includes aplurality of gripping members or other features (e.g., recesses,protrusions, etc.) to facilitate the handling of the tip 560.

With reference back to the exploded perspective view of FIG. 3A, a tip160 can be configured to slidably connect to the distal end of ahandpiece assembly 100 (e.g., the end of the adjustable distal portion130). For example, in some embodiments, the tip 160 is adapted to bepress fit onto the handpiece assembly 100. As illustrated in FIG. 3A,one or more O-rings 154 or other sealing members can be used betweenadjacent surfaces of the tip 160 and the handpiece assembly 100 toprevent or reduce the likelihood of undesirable leaks or pressure (e.g.,positive, negative or vacuum, etc.). In other embodiments, a tip 160 isremovably secured to a handpiece assembly 100 using any other method ordevice, such as, for example, a threaded connection, interlocking tabs,flanges, members, other fasteners, other mechanical devices and/or thelike. In other arrangements, the tip 160 is permanently orsemi-permanently attached to the handpiece assembly 100.

In the embodiment illustrated in FIGS. 8A-8F, the tip 560 comprises oneor more surfaces along its distal end 561 that are configured to treat(e.g., exfoliate) skin. Any of the embodiments of a tip disclosedherein, including but not limited to those illustrated in FIGS. 1-21B,tip designs incorporated by reference or any other tip designs, orvariations thereof, can include one or more abrasive elements configuredto treat skin. In addition, such tips can include one or more treatmentelements, either in addition to or in lieu of abrasive elements. As usedherein, “abrasive element” is a broad term and includes, withoutlimitation, protruding elements, abrasive materials (e.g., grit,sandpaper-like material, other coarse materials, etc.), roughenedsurfaces, contoured surfaces, surfaces with openings, recesses or otherfeatures, brushes, blades, surfaces impregnated with diamonds or othermaterials and/or the like. Further, as used herein, “treatment element”is a broad term and includes, without limitation, an abrasive element,massage elements or features, elements or features configured tomoisturize or apply one or more treatment agents or fluids, polishing orsoothing elements or features and/or the like.

As illustrated in FIGS. 8A, 8C and 8D, the tip can include a lip 567 orother ridge member along or near its outer periphery. The lip member 567can generally define the periphery of the distal end 561 of the tip 560.In some embodiments, when the tip 560 is positioned against the skin S,as depicted in FIG. 8F, the lip member 567 completely, substantially orpartially inhibits fluids or other materials from escaping a space 590(or a plurality of spaces 590) generally defined between the tip 560 andthe adjacent skin surface S.

With continued reference to FIGS. 8A-8F, the tip 560 can include aplurality of protruding members 574, 576, 578 positioned along itsdistal end 561 and within the interior of the lip member 567. Theprotruding members 574, 576, 578 can be posts or othercylindrically-shaped objects. In some embodiments, the protrudingmembers 574, 576, 578 comprise relatively sharp edges, which can beconfigured to remove skin. The protruding members 574, 576, 578 can haverelatively sharp planing blades. The plurality of protruding members574, 576, 578 can ablate or roughen areas of the skin being treated.

As illustrated in FIGS. 8A-8F, the outer diameter or other comparabledimension (e.g., length, width, etc.) of the posts 574, 576, 578 orother protruding members can vary. For example, in the depictedembodiment, the tip 560 includes a number of large-sized posts 574, anumber of medium-sized posts 576 and a number of small-sized posts 578.In other arrangements, the diameter and/or other dimensions of theprotruding members can be similar or substantiality similar. The postsor other protruding members 574, 576, 578 can be located, spaced andotherwise oriented along the distal end 561 of the tip 560 in anydesired or required manner.

Moreover, the location, spacing, orientation, layout and/or othercharacteristics of the posts 574, 576, 578 or other protruding memberscan be different than illustrated or discussed herein, as desired orrequired by a particular procedure or application. As discussed, the lipmember 567 of the tip 560 can help create an enclosed space 590 (or aplurality of spaces 590) generally defined between the distal end 561 ofthe tip 560 and the skin surface being treated. Therefore, according tosome embodiments, the lip member 567 extends above the top of theprotruding members 574, 576, 578 so that the protruding members arewithin the enclosed space during a treatment procedure. In otherembodiments, however, the top surface of the lip 567 is below orgenerally aligned with the top surface of the protruding members 574,576, 578.

With continued reference to FIGS. 8A-8E, the tip 560 can include aninterior delivery stem 564 that is configured to place the distal end561 of the tip 560 in fluid communication with the one or more deliverychannels or other conduits located within the handpiece assembly. Forexample, as discussed herein with reference to FIGS. 4, 5A and 5B, thedelivery stem 164, 564 of the tip 160, 560 can be sized, shaped andotherwise adapted to receive serums, fluids and/or other materials froma delivery channel 140 of the adjustable distal portion 130 when the tip160, 560 is properly secured within or to the handpiece assembly 100.

As illustrated in FIGS. 8A and 8C, the distal end 561 of the tip 560 caninclude an opening 570 through which fluids and/or other materialsconveyed by the delivery stem 564 may exit. As shown, the opening 570 islocated at or near the center of the distal end 561 of the tip 560. Inother arrangements, a tip 560 can include additional stems 564 and/oropenings 570. In addition, the size, shape, location and/or otherdetails of the openings 570 can be different than illustrated herein.

Moreover, the distal end 561 of the tip 560 can include one or moreoutlet openings 572A, 572B through which exfoliated skin, spent serums,other waste liquids, fluids and other materials and/or the like can beremoved. In the embodiment illustrated in FIGS. 8A-8F, the tip 560includes two outlet openings 572A, 572B. However, more or fewer openingscan be included, as desired or required. In addition, as shown in thecross-sectional view of FIG. 8F, some or all of the posts or otherprotruding members 574, 576, 578 can be generally hollow so that theyperform a similar function as other outlet openings 572A, 572B of thetip 560. In other embodiments, however, some or all of the protrudingmembers are not hollow or do not include openings therethrough.Regardless of the quantity, shape, size, orientation, spacing, layoutand/or other characteristics of the outlet openings 572A, 572B and/orthe hollow protruding members 574, 576, 576 included along the distalend 561 of the tip 560, exfoliated skin, spent serums, other fluidsand/or any other materials can be removed from the enclosed space 590 toone or more collection areas 552 positioned within an interior portionof the tip 560.

In some embodiments, the outlet openings 572A, 572B and/or theprotruding members 574, 576, 578 are in fluid communication with outletstems (not shown) that extend toward one or more collection areas 552within an interior portion of the tip 560. Once within an interiorcavity or other portion of the tip 560, such waste materials can bedrawn into one or more removal or waste channels 120, 150 positionedwithin the handpiece assembly 100 (FIG. 3B). An adequate vacuum or othersuction source can transport such waste fluids and/or materials to acanister, other container and/or any other desired location via tubing190 or another fluid conduit.

As discussed herein with reference to the schematic of FIG. 4F, in someembodiments, when the distal end 561 of a tip 560 is positioned againstthe skin being treated, one or more enclosed spaces are created betweenthe skin surface and tip, generally along the interior of a peripherallip member or other ridge. Therefore, as a vacuum or another suctionforce is applied to the removal or waste channels of a handpieceassembly, exfoliated skin, spent serum, other fluids and/or othermaterials can be removed from the enclosed spaces. In FIG. 8F, theenclosed space 590 is at least partially defined between the lip 567 ofthe tip 560 and the adjacent skin surface S being treated. At the sametime, the delivery stem 564 of the tip 560, the delivery channel 140 ofthe handpiece assembly 100 (FIG. 4) and any other conduit or space thatis in fluid communication with the enclosed space 590 of the tip 560 canalso be subjected to a vacuum or other suction force. Consequently,serums, other treatment materials and/or the like can be advantageouslytransported to the distal end 561 of the tip 560 through one or moreopenings 570. As discussed, tip designs discussed or illustrated herein,or variations thereof, can comprise any combination of treatmentelements and/or abrasive elements, as desired or required by aparticular application.

For any of the tip embodiments disclosed herein, including thosediscussed with reference to FIGS. 1-21B, or variations thereof, the tipscan comprise one or more rigid, semi-rigid and/or flexible materials,including without limitation, plastic or other polymers, metal (e.g.,stainless steel), alloys, rubber, other synthetic or natural materials,combination thereof and/or the like.

Another embodiment of a removable tip 660 is illustrated in FIGS. 9A-9F.As shown, the tip 660 can include a generally oval or oblong shape.However, the tip 660 can have a different overall shape, such as, forexample, circular, rectangular, other polygonal and/or the like, asdesired or required. In some arrangements, the tip 660 comprises a lip667, ridge or other feature along its outer periphery. As discussedherein with respect to the tip illustrated in FIGS. 8A-8F, such a lip667 can help create one or more spaces along the distal end 661 of thetip generally defined by the tip 660 and the skin surface being treated.

With further reference to FIGS. 9A, 9C and 9F, the distal end 661 of thetip 660 can include a spiral-shaped channel 682 generally formed by aridge 680 or other member. In the illustrated embodiment, the channel682 extends generally continuously from a central opening 670 throughwhich serums, other fluids and/or other materials conveyed to the tip660 may exit. As shown, the tip 660 can include one or more outletopenings 672A-672D to permit exfoliated skin, spent serums and otherfluids and/or any other waste materials to be removed from the distalend 661 of the tip 660. The outlet openings 672A-672D can be locatedwithin or near the channel 682 and/or anywhere else along the distal end661.

With continued reference to FIGS. 9A and 9C, the tip 660 can include aplurality of protruding members 674, 676 that extend along its distalend 661. As discussed with reference to FIGS. 8A-8F, such protrudingmembers 674, 676 can include relatively sharp edges that are configuredto remove skin. In the illustrated arrangement, the protruding members674, 676 include a generally cylindrical shape and are disposed alongthe outer portions of the tip 660. In addition, some of the protrudingmembers 676 can have a different diameter (or other comparabledimension), length or other dimension than other protruding members 674.However, the quantity, diameter or other dimensions, size, shape,spacing, location, orientation, density, layout and/or other propertiesof the protruding members 674, 676 can vary as desired or required by aparticular application or use.

In the depicted arrangement, since they are not in fluid communicationwith a vacuum or other suction force, some or all of the protrudingmembers 674, 676 are not hollow and/or do not include openingstherethrough. In other embodiments, however, one, some or all of theprotruding members 674, 676 are configured to be in fluid communicationwith a collection area 652 of the tip 660. As illustrated in FIGS. 9B,9D and 9F, the tip 660 can include an upper body portion 663A and alower body portion 663B. In some embodiments, the delivery stem 564through which serum, water, other liquids and/or other treatmentmaterials are delivered to the distal end 661 and one or more collectionareas 652 to which waste materials are directed can be housed within thelower body portion 663B. As discussed, the tip 660 depicted in FIGS.9A-9F and discussed herein, or variations thereof, can comprise anycombination of treatment elements and/or abrasive elements, as desiredor required by a particular application.

FIGS. 10A-10F illustrate another embodiment of a removable tip 760configured to be secured to a handpiece assembly. As with otherarrangements disclosed herein, the tip 760 preferably includes one ormore features that are adapted to remove skin during a treatmentprocedure. For example, in the illustrated embodiment, the tip 760includes one or more pads 780A-780D or other members having a generallyabrasive surface. The abrasive surface can include grit, a plurality ofmembers (e.g., members similar to the protrusion members or postsdescribed and illustrated herein) and/or the like. In some embodiments,the pads 780A-780D and/or other abrasive members are selectivelyremovable from the tip 760. This permits users to advantageously changethe abrasive portion of a tip 760 without replacing the entire tip 760.A pad 780A-780D or other abrasive member can be secured to the tip 760using adhesives, snap connections, press-fit connections, hingedconnections, tabs, screws, rivets, other fasteners and/or any othermethod or device. For example, if a pad is attached to a tip using anadhesive layer or substance, the pad can be removed by physicallyscraping or otherwise separating the pad and adhesives from the adjacentsurfaces of the tip. Accordingly, a new pad or other abrasive member canthen be glued or otherwise attached to the tip. In other embodiments, asillustrated in FIGS. 19A-20D and discussed in greater detail herein, thetip can be configured to receive a removable pad comprising one or moreabrasive surfaces.

Tips comprising removable pads 780A-780D or other abrasive members canhelp enhance the flexibility of a skin treatment device or system. Forinstance, such pads can allow a user to make changes to the skintreatment properties of a tip without having to replace the entire tipor changing the tip design. For example, a user can selectively changethe roughness and/or abrasiveness of the tip by replacing only the pads780A-780D along the distal end 761.

With continued reference to FIGS. 10A and 10C, the tip 760 can comprisea plurality of separate pads 780A-780D or other abrasive members.Alternatively, the tip 760 can include more or fewer (e.g., one, two,three, four, five, more than five, etc.) pads 780A-780D, as desired orrequired by a particular application or use. The pads 780A-780D or othermembers can be sized, shaped, oriented and/or otherwise configured tocover all, most or some of the distal end 761 of the tip 760.

As with other tip arrangements discussed and/or illustrated herein, thetip 760 depicted in FIGS. 10A-10F comprises an opening 770 along itsdistal end 761 that is in fluid communication with a delivery stem 764or other conduit. Thus, serums, water, other fluids and/or any othermaterials can be delivered to the distal end 761 of the tip 760 throughone or more such openings 770. In addition, the tip 760 can include oneor more outlet openings 772A, 772B through which exfoliated skin, spentserums, other fluids and/or any other waste materials can be removedfrom the distal end 761. As illustrated in the cross-sectional view ofFIG. 10F, such waste materials can be conveyed to one or more collectionareas 752 within an interior portion of the tip 760 throughcorresponding waste channels 773A, 773B or other conduits.Alternatively, waste fluids and other materials can be directed to acollection area 752 without a dedicated waste channel of conduit 773A,773B (see FIGS. 8A-8F and 9A-9F).

With continued reference to FIG. 10F, the tip 760 can include an outerlip 767 or other peripheral member that is configured to create anenclosed space 790 when the tip 760 is generally positioned againstskin. As discussed, the application of an adequate vacuum or othersuction force to such an enclosed space 790 can help remove spentfluids, exfoliated skin and other waste materials from the distal end761 of the tip, while simultaneously drawing serums, salicylic acid,other anti-acne acids and materials, microcapsules, capsules, othertime-release products and substances, and/or other treatment fluids ormaterials toward the tip (e.g., from a cartridge via a delivery stem764).

As discussed, any of the tip embodiments disclosed herein, including butnot limited to those illustrated in FIGS. 1-21B, can be configured sothat the flow direction of serums, other fluids and/or other materialspassing through the various conduits, channels, passages or otherhydraulic components of such tips can be selectively reversed, asdesired or required. For example, a tip, along with the handpieceassembly to which it is attached, can be configured so that fluidsand/or other materials pass through one or more centrally-locatedpassages, conduits or other portions thereof. Alternatively, the tip andhandpiece assembly can be configured so that fluids and/or othermaterials pass through one or more non-centrally located (e.g.,peripheral, offset, etc.) passages, conduits or other portions thereof.

Further, the connection and/or other hydraulic details of the tip andadjacent portions of the handpiece assembly can vary, as desired orrequired. For example, as discussed with reference to the embodiment ofFIGS. 5A-5C, the adjustable distal portion of the handpiece assembly caninclude a nozzle or other protruding member that is configured to besecured within a recess or other corresponding portion of the tip tomechanically connect and place the two members in fluid communicationwith one another. However, in other arrangements, such as, for example,those illustrated in FIGS. 3A-4B, a nozzle or other protruding portionof the tip is adapted to be secured within a corresponding area of theadjustable distal portion of the handpiece assembly. Thus, the size,shape, general design, other connection and/or hydraulic details and/orother characteristics of any of the embodiments of a tip, handpieceassembly and/or other components of a skin treatment system disclosedherein, or variations thereof, can be modified, as desired or required.

Although only certain embodiments of tips are illustrated and discussedherein, any other tip configurations or designs can be used on ahandpiece assembly to perform a skin treatment procedure. As discussed,in some embodiments, the tips are removable, allowing a user toselectively interchange tips either during a procedure or betweenprocedures, as desired or required by a particular application. In otherarrangements, tips are more permanently or semi-permanently attached tothe handpiece assembly. Additional embodiments of tips are disclosed inU.S. patent application Ser. No. 11/392,348, filed on Mar. 29, 2006 andpublished on Jul. 5, 2007 as U.S. Publication No. 2007/0156124, and U.S.patent application Ser. No. 09/699,220, filed on Oct. 27, 2000 andissued on Oct. 7, 2003 as U.S. Pat. No. 6,629,983, the entireties ofboth of which are hereby incorporated by reference herein.

In any of the embodiments disclosed herein, or variations thereof, thetip, the handpiece assembly and/or any other component or device caninclude rigid and/or semi-rigid materials. For example, a tip cancomprise plastic, another polymeric material, rubber, metal and/or thelike. Accordingly, the tips and/or other portions of the handpieceassembly can be manufactured using any suitable method, such as, forexample, injection or compression molding, thermoforming, other moldingmethods, casting and/or the like. The tips can be disposable so thatthey are used once or only for a limited number of times. Alternatively,if properly treated, the tips can be reused. Therefore, in suchembodiments, the tips are preferably configured to withstand therequired cleaning, sterilizing, disinfecting and/or other treatmentprocedures to which they may be exposed.

Any of the tips disclosed herein can be used in wet and/or dry systems.In general, wet systems include skin treatment devices, assemblies orsystems in which serums, salicylic acid, other anti-acne acids andmaterials, microcapsules, capsules, other time-release products andsubstances, water, other fluids and/or other materials are conveyed,either continuously or intermittently, to the tip during a procedure. Asdiscussed in greater detail herein, such fluids and/or other materialscan be delivered through the handpiece assembly, tip and/or othercomponents of the skin treatment system in their final, usable form. Inother arrangements, such materials and/or substances are positioned onthe tip and/or other portions the system (e.g., as solids, gels,concentrated solutions, etc.) and are adapted to be dissolved, diluted,mixed or otherwise combined with water (e.g., distilled, tap water,sterile, filtered, etc.), saline, other dilutants or dissolvents and/orother fluids to prepare them for use. On the other hand, dry systems caninclude skin treatment devices, assemblies and systems in which fluidsand/or other materials are generally not conveyed to the tip during theprocedure.

As discussed, one or more fluids and/or other substances can bedelivered to the tip of a handpiece assembly during a skin treatmentprocedure. In some embodiments, such fluids and/or other materials arestored within a cartridge (e.g., vial, ampoule, other container, etc.)that is secured to or within the handpiece assembly. Alternatively,these fluids and/or other materials can be stored in a canister or othercontainer that is separate from the handpiece assembly. In sucharrangements, as discussed herein with reference to FIGS. 6B and 7, thehandpiece assembly can be placed in fluid communication with one or morecontainers using conduits or other fluid lines.

In some embodiments, human growth factors, cytokines, soluble collagen,antioxidants, matrix proteins, serums, salicylic acid, other anti-acneacids and materials, microcapsules, capsules, other time-releaseproducts and substances, water (e.g., distilled, tap water, filtered,etc.), saline, other dilutants or dissolvents, vitamins, chemicalexfoliation agents, lotions, soothing agents, brightening or lighteningagents, peptides, peeling agents, acids, anesthetics, medicants, othernon-active or active compounds, other fluids or materials, combinationor mixtures thereof and/or any other substance are selectively deliveredto the skin during a treatment procedure. Such materials can bedelivered individually or as part of a mixture. Such materials orcombination of materials can be provided in a cartridge or othercontainer, which, as discussed, can be placed in fluid communicationwith a handpiece assembly. These treatment fluids and other materials,either alone or in combination, can help reduce the appearance ofwrinkles, fine lines, age spots, scarring and/or other skin conditions.In addition, such fluids and/or other materials can help to reduce skinroughness, thereby facilitating rejuvenation of the skin and/orimproving skin texture. Further, such fluids or other treatmentmaterials can provide one or more other therapeutic, comfort,anesthetic, aesthetic or other benefits to a user or his or her skin.

In any of the embodiments described and/or illustrated herein, orvariations thereof, treatment fluids and/or other materials can bedelivered to the tip of a handpiece assembly using one or more devicesor methods. For example, in some embodiments, such substances areselectively delivered through a cartridge, supply canister, fluidbottle, combinations thereof and/or the like. Such serums, compositions,other fluids and/or other materials or substances can be pre-mixed sothat they are delivered to the tip and the skin unmodified orsubstantially unmodified.

As discussed in greater detail herein, in some embodiments, human growthfactors, cytokines, soluble collagen, antioxidants, matrix proteins,serums, salicylic acid, other anti-acne acids and materials,microcapsules, capsules, other time-release products and substances,water (e.g., distilled, tap water, filtered, etc.), saline, otherdilutants or dissolvents, vitamins, chemical exfoliation agents,lotions, soothing agents, brightening or lightening agents, peptides,peeling agents, acids, anesthetics, medicants, other non-active oractive compounds, other fluids or materials, combination or mixturesthereof and/or any other substance are provided to users as a pack or inother forms. For example, such materials and other substances can beprovided as a solid (e.g., tablet, capsule, etc.), dry granularmaterials, viscous gels, concentrated fluids or other solutions and/orthe like. Such packs or other solids, semi-solid, gelatinous and/orother substances can be configured to be combined or mixed with water,saline and/or some other fluid by a user to achieve a desired endproduct or concentration.

In other embodiments, one or more treatment materials can beimpregnated, embedded, deposited or otherwise positioned within and/oron the tips and any other portion of a handpiece assembly. Thus, suchmaterials (e.g., powders, tablets, capsules, other solids, granularmaterials, gels, etc.) can advantageously dissolve, melt, break down orotherwise transform when they are contacted by water, saline, otherdilutants, dissolvents and/or other liquids or fluids delivered to thetip (e.g., through the handpiece assembly, by an external fluid source,etc.) In other arrangements, the treatment materials are containedwithin a capsule, tablet or other enclosure. Such enclosures can beconfigured to dissolve when placed in water or some other fluid.Therefore, a user may be required to place a capsule, the contents of apack or some other materials into a cartridge, canister or othercontainer and add or otherwise supply water, saline, other fluids and/orother dissolvent before use.

FIG. 11 illustrates a partial cross-sectional view of a tip 1160configured to be secured to the distal end of a handpiece assembly. Asshown, the tip 1160 can include one or more fluid inlet openings 1172through which water, saline, other dilutants or dissolvents, otherfluids and/or other materials can be selectively delivered to the tip,in accordance with the various embodiments disclosed herein. Further,the tip 1160 can include one or more outlet openings (not shown) throughwhich exfoliated skin, spent serums or other fluids, debris and/or otherwaste materials can be removed away from the skin surface being treated.

With continued reference to FIG. 11, the tip 1160 can additionallycomprise a plurality of protruding members 1174, 1176 positioned alongits distal end and within the interior of the tip's outer lip member1167. As discussed, such protruding members 1174, 1176 can be posts orother cylindrically-shaped objects. In some embodiments, the protrudingmembers 1174, 1176 comprise relatively sharp edges that are configuredto remove skin when the tip is moved relative to a skin surface. Theprotruding members 1174, 1176 can have relatively sharp planing blades.The plurality of protruding members 1174, 1176 can ablate or roughenareas of the skin being treated.

According to some embodiments, some or all of the posts 1174, 1776 orother protruding members comprise one or more materials or othersubstances D. For example, the posts can be at least partially filledwith dried or granular materials, tablets, capsules, powders, gels,concentrated liquids and/or other substances that are configured todissolve, melt, soften, dilute, disperse, mix or otherwise be removedfrom an interior of the protruding members 1174, 1176. Such materials orother substances, which can be provided in one or more different formsor phases (e.g., liquid, solid, gel, etc.), can include, withoutlimitation, human growth factors, cytokines, collagen, antioxidants,matrix proteins, serums, salicylic acid, other anti-acne acids andmaterials, microcapsules, capsules, other time-release products andsubstances, vitamins, chemical exfoliation agents, lotions, soothingagents, brightening or lightening agents (e.g., kojic acid), peptides,peeling agents, acids, anesthetics, medicants, other non-active oractive compounds, other fluids or materials, combination or mixturesthereof and/or the like.

With continued reference to FIG. 11, as water (e.g., distilled, tapwater, filtered, etc.), saline, other dilutants or dissolvents, otherfluids and/or the like are selectively delivered through the handpieceassembly and through one or more openings 1172 of the tip 1160, thevarious materials and/or other substances D situated within the posts1174, 1176 can be dissolved, diluted and/or otherwise mixed to form adesired solution or mixture. Thus, a tip 1160 can be customized for aparticular skin treatment procedure by including one or more desired orrequired substances within the protruding members and/or other cavitiesof the tip 1160. Accordingly, the various solutions conveyed, dissolvedand/or otherwise generated at or near the tip 1160 can used to achieve adesired result, such as, for example, providing vitamins, growthfactors, soothing agents or lotions, healing agents and/or othersubstances to treated skin, moisturizing the skin, enhancing the comfortof the person being treated and/or the like. Further, such materialsimpregnated or otherwise disposed on the tip can be customized to targeta particular treatment procedure or phase, skin type, skin ailment orcondition and/or the like.

Providing the desired materials and/or other substances on the tip canhelp simplify a microdermabrasion or other skin treatment procedure. Forinstance, in such embodiments, the user may only need to provide water,saline and/or some other basic fluid to perform the procedure. Thus, theneed to deliver separate serums, salicylic acid, other anti-acne acidsand materials, microcapsules, capsules, other time-release products andsubstances, other fluids and/or materials through the handpiece assembly(e.g., using a manifold system, a cartridge, etc.) can be advantageouslyeliminated or simplified. As a result, the likelihood of a user makingmistakes can be reduced or eliminated. In addition, by delivering onlywater, saline and/or other relatively clean fluids through the variousdelivery conduits, passages, ports, openings and other hydrauliccomponents of the tip, handpiece assembly and other components of a skintreatment system, the need to periodically clean the various devices andother equipment can be advantageously reduced or eliminated. Thus, theeffective life of the skin treatment system can be extended. Relatedly,the likelihood of potentially dangerous or undesirablecross-contamination between the various serums, agents, other fluidsand/or other materials can also be reduced or eliminated.

FIG. 12A illustrates one embodiment of a tip 1260 comprising a pluralityof recesses 1280 or other openings located along its distal surface. Asshown, such recesses 1280 or other openings can be positioned along anouter periphery of the tip's distal surface. However, in alternativeembodiments, one or more recesses 1280 are located between the posts1274, 1276, 1278 and/or at any other location, either in lieu of or inaddition to the recesses 1280 being positioned along an outer peripheryof the tip. Such recesses or other openings can be configured to includeone or more solids, gels, concentrated solution, dissolvable materialsand/or other substances D therein.

With reference to the cross-sectional view of FIG. 12B, the recesses caninclude a semi-circular, curvate or other rounded shape. In certainembodiments, the recesses 1280 are at least partially filled with driedor granular materials D, tablets, capsules, powders, gels, concentratedliquids and/or other substances that are configured to at leastpartially dissolve, melt, soften, dilute, disperse, mix or otherwise beremoved from an interior of the recesses or other openings. As discussedherein with reference to other embodiments, such materials or othersubstances, which can be provided in one or more different forms orphases (e.g., liquid, solid, gel, etc.), can include, withoutlimitation, human growth factors, cytokines, collagen, antioxidants,matrix proteins, serums, salicylic acid, other anti-acne acids andmaterials, microcapsules, capsules, other time-release products andsubstances, vitamins, chemical exfoliation agents, lotions, soothingagents, brightening or lightening agents, peptides, peeling agents,acids, anesthetics, medicants, other non-active or active compounds,other fluids or materials, combination or mixtures thereof and/or thelike.

The quantity, size, depth, shape, capacity, location, spacing and/orother details of the recesses or other openings positioned along one ormore tip surfaces can vary, as desired or required. For example, in thetip arrangement of FIG. 12C, the illustrated recess 1280′ includes agenerally rectangular cross-sectional shape. However, a recess or otheropening can include any other cross-sectional shape, such as, forexample, triangular, other polygonal, irregular and/or the like.

In alternative embodiments, the desired solids D, other dry or semi-drymaterials, gels, concentrated materials and/or other substances areincluded within a cartridge or other container. As illustrated in FIGS.13A and 13B, such a cartridge 1290 or other container can be secured toone or more portions of the tip 1260″. In the depicted arrangement, thecartridge 1290 is situated below the top surface 1261″ of the tip 1260″and aligned with one or more openings 1280″ of the top surface 1261″.Accordingly, the solids, gels, fluids and/or other materials orsubstances stored within an interior of the cartridge 1290 can beconfigured to exit the cartridge 1290 through one or more openings 1280″of the tip's top surface 1261″. In some embodiments, the cartridge orother container 1290 includes one or more slots, perforations, orificesor other openings through which the various materials D can exit.Alternatively, the cartridge 1290 can include one or more poroussurfaces that allow the internal contents D to freely exit the cartridge1290. Thus, the cartridge 1290 can include an outer cage, a perforatedor other porous surface and/or the like.

With continued reference to FIG. 13A, water (e.g., distilled, tap water,filtered, etc.), saline, other dilutants or dissolvents and/or otherfluids that are delivered to the tip 1260″ (e.g., through one or moreopenings 1272″ along the top surface 1261″ of the tip 1260″) can beconfigured to enter into an interior 1291 of the cartridge 1290 throughone or more openings 1280″. Accordingly, the materials and/or othersubstances D contained within the cartridge 1290 can be at leastpartially dissolved, melted, diluted, reacted and/or otherwise mixed orcombined with the water, saline or other fluids. This can facilitate thecontrolled removal of these materials D toward the distal workingsurface of the tip 1260″.

As illustrated in FIG. 13B, the cartridge 1290 can have a generallytoroidal or donut-shape. In some embodiments, the cartridge 1290 orother container is configured to be positioned within an interiorportion of the tip 1260″. The cartridge 1290 can be secured to the tip1260″ using a friction fit connection, one or more mechanical featuresor devices (e.g., threads, clips, screws, tabs, etc.) and/or any otherattachment device or method. In addition, the shape, size, orientationrelative to the tip 1260″ and/or any other characteristics of thecartridge 1290 can be different than illustrated in FIGS. 13A and 13B.For instance, the cartridge 1290 or other container can have a generallyrectangular, circular or any other shape. Further, the cartridge 1290can be configured so that it does not extend around the entire perimeterof the tip 1260″. In other embodiments, a cartridge or other containercomprising solids, gels and/or other materials is positioned along adifferent portion of the tip, such as, for example, at or near thecenter, locations between the center and the periphery and/or the like.

FIG. 14A schematically illustrates an embodiment of a disc 1390, capsuleor other item comprising one or more solids, other dried or partiallydried substances, gels, concentrated solutions and/or the like. Thesematerials can comprise some, most or the entire portion of the disc 1390or other item. Alternatively, the materials can be embedded, impregnatedand/or otherwise situated on or within one or more portions or areas(e.g., surface) of the disc 1390 or other item. In other embodiments,such solids, gels and/or other materials are provided in a cartridge orother container that includes one or more openings through which thesubstances may exit (e.g., in their original form, after being at leastpartially dissolved, diluted or otherwise mixed with water or anotherfluid, etc.).

With continued reference to FIG. 14A, the disc 1390, capsule or otheritem can be sized, shaped and otherwise configured to be positionedbetween the tip 1360 and the main body portion 1300 of a handpieceassembly. According to some embodiments, the disc 1390 or other itemincludes an opening 1394 or other feature that is adapted to engage andsecure to one or more regions of the tip 1360, the main body portion1300 and/or any other area of a handpiece assembly. In certainarrangements, the disc 1390 is maintained in a desired orientation whenthe tip 1360 is properly connected to the main body portion 1300 of thehandpiece assembly. However, a desired or required position of a disc1390, capsule or any other items comprising one or more solids, gels,concentrated solutions or other fluids and/or other materials can bemaintained using any other attachment method or device.

FIGS. 14B and 14C illustrate one embodiment of a disc 1390, capsule orother item comprising one or more human growth factors, cytokines,soluble collagen, antioxidants, matrix proteins, serums, salicylic acid,other anti-acne acids and materials, microcapsules, capsules, othertime-release products and substances, vitamins, chemical exfoliationagents, lotions, soothing agents, brightening or lightening agents,peptides, peeling agents, acids, anesthetics, medicants, othernon-active or active compounds, other fluids or materials, combinationor mixtures thereof and/or other substances. For example, as discussed,such materials can be provided on or within the disc 1390 (e.g., alongan exterior surface, within an interior portion, etc.).

According to some embodiments, the disc 1390 includes a center opening1394 to permit the disc 1390 to be positioned over a stem 1364 extendingwithin an interior of the tip 1360. In the illustrated arrangement, thestem 1364 comprises an outlet conduit or channel that is configured toremove exfoliated skin, spent treatment materials and other debris awayfrom the distal end of the tip 1360. However, as discussed herein withreference to the tip of FIGS. 15A and 15B, the stem 1364 can include oneor more conduits or channels that are configured to deliver water,saline, other dissolvents, dissolvents, dissolving agents and/or otherfluids toward the skin surface being treated.

With continued reference to FIGS. 14B and 14C, the disc 1390, capsule,cartridge or container or other item comprising the desired materialscan be configured to be removably fixed to the stem 1364 of the tip 1360using a press-fit or other friction connection. For example, in someembodiments, the disc 1390 can be positioned far enough into an interiorof the tip 1360 so that the exterior surface of the tip's stem 1364frictionally engages the inner surface of the disc's opening 1394.However, as discussed, one or more other attachment methods or devicescan be used in addition to or in lieu of such a friction or press fitconnection in order to secure the disc 1390 to the tip 1360.

Once the disc 1390, capsule or other member has been properly secured tothe tip 1360, as depicted in FIG. 14C, the tip 1360 can be attached tothe distal end of the handpiece assembly (e.g., adjustable distalportion). Thus, water (e.g., distilled, tap water, filtered, etc.),saline, other dilutants or dissolvents or other fluids being deliveredto the tip 1360 can be configured to contact the various substances(e.g., tablets, capsules, other solids, granulated materials, gels,concentrated solutions or other materials, etc.) situated on or withinthe disc 1390. Such materials and other substances can be advantageouslydissolved, diluted, melted, softened and/or otherwise conditioned sothat they are delivered to the distal end of the tip 1360 through one ormore conduits 1368 of the tip 1360. As a result, human growth factors,cytokines, soluble collagen, antioxidants, matrix proteins, serums,salicylic acid, other anti-acne acids and materials, microcapsules,capsules, other time-release products and substances, water (e.g.,distilled, tap water, filtered, etc.), saline, other dilutants ordissolvents, vitamins, chemical exfoliation agents, lotions, soothingagents, brightening or lightening agents, peptides, peeling agents,acids, anesthetics, medicants, other non-active or active compounds,other fluids or materials, combination or mixtures thereof and/or anyother substance can be advantageously delivered to the skin beingtreated, as desired or required.

According to some embodiments, water, saline or other fluids areconfigured to flow past the exterior surfaces of the disc 1390, capsuleor other item. Thus, solids, gels, fluids and/or other materialsimpregnated on such surfaces, positioned within recesses or otheropenings in fluid communication with such surfaces and/or the like canbe transferred to the skin surface being treated. In alternativeembodiments, the solids, gels, fluids and/or other materials arepositioned within an interior cavity of the disc 1390 or other item. Forexample, the disc 1390 or capsule can comprise a cage or other porousstructure that is configured to house one or more dissolvable ordilutable solids or gels. Therefore, water, saline and/or other fluidscan be adapted to travel through one or more openings of the disc 1390or other member in order to contact the various materials containedtherein. Accordingly, the disc 1390 can be configured to lose mass overtime as water or other fluids dissolve, dilute or otherwise combine withthe materials positioned on or within the disc 1390. In alternativeembodiments, the disc 1390 (e.g., cage, container having one or moreopenings, etc.) or other item secured within the tip 1360 is adapted tomaintain its shape over time if such a disc is used to merely containthe solids, gels, fluids and/or other materials that will be selectivelytransported toward the distal end of the tip 1360.

Such discs 1390, capsules, containers or other items can be used inconjunction with any of the tip designs illustrated or discussed herein,or variations thereof. Further, the size, shape, general configuration,location relative to the tip or other adjacent portions of the handpieceassembly and/or any other characteristics of the disc 1390 can vary, asdesired or required. For instance, the disc 1390 can include anon-circular shape (e.g., rectangular, triangular, other polygonal,elliptical, etc.). Further, the disc 1390 can include a curved or flutedsurface. In other arrangements, a disc 1390 does not extend completelyaround a stem 1464 or other central portion of the tip interior. Thus,the disc 1390 can be asymmetrically positioned relative to the stem 1464or tip centerline. In another embodiment, the disc 1390 is positioned ononly one side of the stem 1464.

Another embodiment of a disc 1490 that is configured to be secured to atip 1460 of a handpiece assembly is illustrated in FIGS. 15A and 15B. Asshown, the flow through the stem 1464 and the various conduits 1468 ofthe tip 1460 is generally reversed from the configuration of FIGS.14A-14C. However, similar to the arrangement of FIGS. 14A-14C, thedepicted disc 1490, capsule or other item is configured to secure to anexterior portion of the stem 1464.

With continued reference to FIGS. 15A and 15B, the solids, gels,concentrated fluids and/or other materials contained within an interiorof the disc 1490 can be configured to come into contact with water,saline, other dilutants or dissolvents and/or other fluids beingconveyed through the internal passage of the stem 1464. Accordingly,such materials can be dissolved, diluted, softened, mixed and/orotherwise combined with such fluids before being carried to the distalend of the tip 1460.

The final products being delivered to the skin can include, withoutlimitation, human growth factors, cytokines, soluble collagen,antioxidants, matrix proteins, serums, salicylic acid, other anti-acneacids and materials, microcapsules, capsules, other time-releaseproducts and substances, water (e.g., distilled, tap water, filtered,etc.), saline, other dilutants or dissolvents, vitamins, chemicalexfoliation agents, lotions, soothing agents, brightening or lighteningagents, peptides, peeling agents, acids, anesthetics, medicants, othernon-active or active compounds, other fluids or materials, combinationor mixtures thereof and/or any other substance. Alternatively, suchsolids, gels and/or other materials can be impregnated or otherwisepositioned along one or more exterior surfaces of the disc 1490 (e.g.,along the inner diameter of the opening 1494). As discussed withreference to other embodiments disclosed herein, the disc 1490 can bepartially or completely formed from such dissolvable or removablematerials, so that it loses mass over time (e.g., as water or otherliquids come in contact with it). In other embodiments, the disc 1490comprises a porous container (e.g., cage) that is configured to houseone or more solids, gels and/or other materials therein. In sucharrangements, the disc 1490 can be removed, refilled, replaced and/orreused, as desired or required.

In FIGS. 15A and 15B, the stem 1464 of the tip comprises one or moreside openings 1465 through which the materials and other substancescontained on and/or within the disc 1490 may exit. Further, suchopenings 1465 can permit water, saline and/or other fluids beingconveyed through the stem to enter an interior of the disc 1490 in orderto advantageously dissolve, dilute and/or otherwise mix with the variousmaterials contained therein. In some embodiments, the disc 1490 includesone or more openings that generally correspond to and align with theside openings 1465 of the stem 1460. Alternatively, the disc 1490,capsule or other item can comprise a cage or other porous structure topermit the various solids, gels, concentrated fluids and/or othermaterials contained therein to pass toward the opening 1465 of the stem1464. Such materials and substances can be dissolved, diluted orotherwise mixed with water, saline and/or other fluids either within aninterior cavity of the disc 1490, along an exterior portion of the disc,within the passage of the stem 1464 and/or at any other location orportion of the tip 1460.

With reference to the schematic of FIG. 16A, a disc 1590, capsule orother item can be secured to a distal end of the main body portion 1500of the handpiece assembly. For example, as illustrated in FIG. 16B, acentral opening 1566 of the disc 1590 can be positioned over a nozzle1566 or other protruding member of the handpiece assembly. As discussedwith reference to other embodiments herein, including the discs of FIGS.14A-14C, 15A and 15B, exterior and/or interior portions of the disc 1590can include one or more solids, granulated materials, semi-solids, gels,concentrated fluids and/or other substances that are configured to becontacted by water, saline, other dilutants or dissolvents and/or otherfluids. The resulting materials that are selectively delivered to thedistal end of the tip 1560 (e.g., through one or more delivery passagesor conduits 1568) can include, without limitation, growth factors,cytokines, soluble collagen, antioxidants, matrix proteins, serums,salicylic acid, other anti-acne acids and materials, microcapsules,capsules, other time-release products and substances, brightening orlightening agents, peptides, acid, water (e.g., distilled, tap water,filtered, etc.), saline, other dilutants or dissolvents, vitamins,chemical exfoliation agents, lotions, soothing agents, anesthetics,medicants, other non-active or active compounds, other fluids ormaterials, combination or mixtures thereof and/or any other substance.

FIG. 17 schematically illustrates one embodiment of a handpiece assembly1700 which is in fluid communication with a vacuum V or other suctionforce via a vacuum line 1704. In addition, the depicted assembly is influid communication with one or more containers 1710, 1720 via adelivery line 1702. As discussed herein, the delivery line 1702 can beplaced in fluid communication with one or more different treatmentmaterials, such as, for example, growth factors, cytokines, solublecollagen, antioxidants, matrix proteins, serums, salicylic acid, otheranti-acne acids and materials, microcapsules, capsules, othertime-release products and substances, water, saline, other dilutants ordissolvents, vitamins, chemical exfoliation agents, lotions, soothingagents, brightening or lightening agents, peptides, peeling agents,acids, anesthetics, medicants, other non-active or active compounds,other fluids or materials, combination or mixtures thereof and/or anyother substance. Such materials can be selectively transferred fromtheir respective containers, through the delivery line and to thehandpiece assembly 1700 in their usable, ready-to-use form (e.g., withthe concentration and other manner in which they will be delivered tothe skin surface being treated).

Alternatively, water (e.g., tap, filtered, sterile, distilled, etc.),saline, other dilutants or dissolvents and/or other fluids can be storedwithin one or more of the containers 1710, 1720 located upstream of thehandpiece assembly 1700. As discussed, such liquids and other fluids canbe selectively delivered to the handpiece assembly 1700 in order todissolve, dilute and/or mix with solids, gels, concentrated fluids,other materials and/or the like that are impregnated, deposited, storedor otherwise situated on or near the tip 1760.

In other embodiments, one or more of the upstream containers (e.g.,container 1710 in FIG. 17) can be configured to store a cleaningsolution. Accordingly, such solutions or other cleaning agents can beselectively conveyed through the delivery conduits 1702 and otherinterior portions of the handpiece assembly 1700, the tip 1760 and/orany other component or portion of a skin treatment system as part of acleaning protocol. For example, the cleaning solutions and other agentscan be used between skin treatment procedures, during a skin treatmentprocedure, in accordance with some predetermined cleaning schedule(e.g., once a day, once every two or three days, once a week, etc.), inaccordance with some other desired or required protocol (e.g., tosatisfy regulatory requirements, quality control standards, etc.) and/orthe like. In some embodiments, the cleaning agents include biocides,antimicrobial solutions, disinfectants, other sterilizing agents and/orthe like. Such a configuration that includes a handpiece assembly influid communication with one or more cleaning solutions or agents can beincorporated into any of the embodiments disclosed herein, or variationsthereof.

The schematic of FIG. 18A illustrates one embodiment of a skin treatmentsystem that includes a handpiece assembly 1800A, a suction line 1804A influid communication with a vacuum or other suction source and a deliveryline 1802A in fluid communication with one or more fluids, materials orother substances. As shown, the delivery line 1802A can include acartridge holder 1830A or other device configured to accept a container1840A. In some arrangements, the cartridge holder 1830A is sized, shapedand otherwise adapted to securely receive a standard or non-standardvial, ampoule and/or any other container 1840A. In certainconfigurations, such containers comprise one or more treatment fluids orother materials that can be selectively transferred to the tip 1860Aduring a procedure. As discussed, these substances can include, withoutlimitation, growth factors, cytokines, soluble collagen, antioxidants,matrix proteins, brightening or lightening agents, peptides, peelingagents, acids, serums, salicylic acid, other anti-acne acids andmaterials, microcapsules, capsules, other time-release products andsubstances, water, saline, other dilutants or dissolvents, vitamins,chemical exfoliation agents, lotions, soothing agents, anesthetics,medicants, other non-active or active compounds, other fluids ormaterials, combination or mixtures thereof and/or the like.

According to certain embodiments, the fluids and/or other materialsincluded in the cartridge 1840A are in their final, ready-to-use state.Thus, the contents of a cartridge 1840A can be directly delivered to thetip 1860A (e.g., as a result of a suction force imparted on the deliveryline 1802A) without being diluted, dissolved or mixed with any otherfluid or substance. Alternatively, a cartridge 1840A can comprisesolids, granulated materials, gels, concentrated solutions and/or thelike that are adapted to be combined with one or more fluids, otherdissolvents or dilutants and/or other fluids (e.g., water, saline,etc.). For instance, such fluids can be conveyed from the upstreamdelivery line and combined with the internal contents of a cartridge1840A or other container when such a cartridge 1840 is properlypositioned within a holder 1830A.

The embodiment illustrated in FIG. 18A can provide a convenient way ofselectively loading and unloading treatment fluids and/or othermaterials prior to, during or following a procedure. In someembodiments, fluids and/or other materials (e.g., water, other treatmentfluids or substances, etc.) are configured to be conveyed through thecartridge holder 1830A from an upstream source even if a cartridge 1840Aor other container is not positioned within the cartridge holder 1830A.

FIG. 18B illustrates a variation of the embodiment depicted in FIG. 18A.As shown, a standard or non-standard cartridge 1840B or other containercan be configured to be selectively positioned within a correspondingslot or other receiving area 1830 of the handpiece assembly 1800B. Asdiscussed with reference to FIG. 18A, the cartridge 1840A can compriseone or more treatment agents, fluids, materials and/or other substances.Such substances can be provided in their final, ready-to-use state.Alternatively, such materials can be provided as solids, granulatedmaterials, gels, concentrated solutions and/or other forms that requirecontact and/or mixing with water, saline or the like before they areready for use (e.g., prior to being delivered to the tip 1860 of thehandpiece assembly, prior to contacting the skin, etc.). The embodimentsillustrated in FIGS. 18A and 18B can be incorporated into any of theembodiments of a skin treatment system disclosed herein, or variationsthereof.

FIG. 19A illustrates another embodiment of a handpiece assembly 1900adapted for use in a microdermabrasion or other skin treatment system.As shown, the handpiece assembly 1900 can include a main body portion1910 and a tip 1960 configured to removably attach to the distal end ofthe main body portion 1910. The main body portion 1910 can include oneor more conduits passing therethrough. In the depicted arrangement, themain body portion 1910 includes a single removal conduit 1950 which ispositioned at or near the longitudinal centerline of the handpieceassembly and which daylights at an opening 1952 at the distal end of themain body portion 1910. The removal conduit 1950 can be placed in fluidcommunication with a vacuum or other suction source using a wasteconduit 1954 to selectively transfer exfoliated skin, spent treatmentfluids, debris and other waste materials away from the tip 1960.

With continued reference to FIG. 19A, the distal end of the tip 1960 caninclude one or more openings 1980 defined within a peripheral lip 1967.According to certain arrangements, the handpiece assembly 1900 is sized,shaped and otherwise configured to receive a removable pad 1990A, 1990Bor other member within an interior of the tip 1960. Thus, as illustratedin FIGS. 19A and 19B, such a pad 1990A, 1990B or other member can begenerally positioned between the tip 1960 and the main body portion 1910when the tip 1960 is properly secured to the handpiece assembly 1900.The pads can have a diameter (or other cross-sectional dimension) thatis greater than the opening 1980 along the distal end of the tip 1960.Accordingly, the pad 1990A, 1990B or other member can be securelyretained below the opening 1980 and within the tip 1960 during use.

As illustrated in the cross-sectional view of FIG. 19B, an upper surfaceof the pad 1990 can be configured to contact a skin surface S throughthe tip opening 1980 during use. Thus, in some embodiments, the uppersurface of a pad is configured to exfoliate skin when it is translatedor otherwise moved relative to a skin surface. The pad 1990 can comprisefoam and/or any other materials. In one arrangement, the pad 1990comprises one or more polymeric materials. However, the pads or otherdevice can include one or more other natural or synthetic materials,either in lieu of or in addition to plastics and other polymers, asrequired to achieve a desired texture, coarseness, roughness and/orother exfoliation characteristics.

In some embodiments, as illustrated in FIG. 19A, the upper and/or lowersurfaces 1992B of the pad 1990B include a texture that is coarser thanother portions of the pad 1990B. For example, the pad 1990B can includegrit, a sandpaper-like finish, an uneven finish, harder or more rigidmaterials and/or the like along its upper and/or lower surfaces 1992B.Such a configuration can further enhance the skin exfoliating propertiesof the pad. In arrangements where it includes both upper and lowertextured surfaces 1992B, the pad 1990B can be flipped to selectivelyplace the desired surface 1992B along the distal end of the tip 1960.For example, after the first surface 1992B has been used for aparticular time period or after the effectiveness of the first surface1992B has generally diminished or deteriorated, a user can remove thetip 1960 and turn the pad 1990B around to expose the second surface1992B to the skin surface S being treated. This can effectively extendthe useful life of a pad. In other embodiments, however, a pad 1990A caninclude one or no textured surfaces. For instance, a pad 1990A withoutany roughened surfaces can be used as a final, polishing skin surfacingstep. According to certain embodiments, a user can be provided with anassortment of pads 1990 each of which having varying skin surfacingcharacteristics. Thus, a user can customize his or her treatmentprocedure, as desired or required.

According to some embodiments, as shown in FIG. 19A, the pads arecylindrical is shape with generally flat upper and lower surfaces.However, the shape, size and/or other characteristics of the pads 1990can vary. The pad 1990 can serve an additional function by beingconfigured to filter some or all of the debris and other waste itembeing transferred from the distal end of the tip 1960 to the wasteopening 1952 and removal conduit 1950 of the main body portion 1910. Forexample, the pad 1990 can comprise foam or another porous structure thateffectively functions as a filter to help trap exfoliated skin and otherwaste materials. Thus, by preventing or reducing the amount of debrispassing to the removal conduit 1950, the pad 1990 can advantageouslyextend the life of the handpiece assembly 1900 and the downstreamcomponents of the skin treatment system (e.g., the waste container, thewaste line 1954, downstream filters, the vacuum or other suction source,etc.).

In some embodiments, a procedure may be enhanced by providing one ormore treatment fluids, serums salicylic acid, other anti-acne acids andmaterials, microcapsules, capsules, other time-release products andsubstances and/or other materials to the skin surface being treated. Forexample, as discussed in greater detail herein, it may desirable toselectively provide human growth factors, cytokines, soluble collagen,antioxidants, matrix proteins, serums, water (e.g., distilled, tapwater, filtered, etc.), saline, other dilutants or dissolvents,vitamins, chemical exfoliation agents, lotions, soothing agents,anesthetics, medicants, other non-active or active compounds, otherfluids or materials, combination or mixtures thereof and/or any othersubstance to the tip 1960 of the handpiece assembly 1900. As discussed,such fluids and/or other materials can be delivered to the tip 1960using one or more delivery conduits, passages and other hydrauliccomponents of the handpiece assembly 1900.

However, in embodiments which do not include such passages, such as theone illustrated in FIGS. 19A and 19B, the desired fluids and/or othermaterials can be included within the pad 1990 or other device situatedbetween the tip 1960 and the main body portion 1910 of the assembly1900. Therefore, solids, gels, fluids and/or other materials includedwithin the pads 1990 can be advantageously excreted or discharged ontothe skin surface S during a treatment procedure. Such materials can bepositioned within the pad body (e.g., foam or other absorbentstructure), on the surface of the pad and/or at any location or regionof the pad, as desired or required.

In order to adequately maintain the desired treatment fluids and/orother materials within the pads 1990, the pads 1990 can be included inan enclosed pouch or other sealed container. This will help ensure thatthe desired materials remain within and/or on the pad 1990 until suchpads 1990 are inserted into a handpiece assembly 1900. In otherembodiments, the pads include one or more solids, granular materials,gels, concentrated fluids and/or other substances that are configured tobe contacted with water, saline, other dilutants or dissolvents and/orother fluids in order to convert them into a usable treatment materialor mixture. Thus, an external fluid source can be used with thehandpiece assembly 1900 of FIG. 19A. Alternatively, as discussed hereinwith reference to the embodiment of FIGS. 20A-20D and FIGS. 21A-21B, ahandpiece assembly can comprise one or more fluid delivery conduits ofits own. Additional information regarding tips configured to receive apad or other device is provided in U.S. patent application Ser. No.09/699,220, filed on Oct. 27, 2000 and issued on Oct. 7, 2003 as U.S.Pat. No. 6,629,983, the entireties of which is hereby incorporated byreference herein.

The handpiece assembly 2000 illustrated in FIGS. 20A-20D is similar tothe embodiment of FIGS. 19A and 19B. However, the depicted embodimentadditionally comprises a fluid delivery conduit 2040 that is configuredto deliver one or more fluids, treatment materials and/or the liketoward the skin surface being treated. As discussed in greater detailherein with reference to other arrangements, human growth factors,cytokines, soluble collagen, antioxidants, matrix proteins, serums,salicylic acid, other anti-acne acids and materials, microcapsules,capsules, other time-release products and substances, water (e.g.,distilled, tap water, filtered, etc.), saline, other dilutants ordissolvents, vitamins, chemical exfoliation agents, lotions, soothingagents, brightening or lightening agents, peptides, peeling agents,acids, anesthetics, medicants, other non-active or active compounds,other fluids or materials, combination or mixtures thereof and/or anyother substance can be delivered through the delivery conduit 2040. Inother embodiments, the delivery conduit 2040 is adapted to convey water,saline, other dilutants or dissolvents and/or other fluids to the tip2060 where they can be selectively mixed, combined or contacted withsolids, semi-solids, gels, granulated materials, concentrated fluids ormaterials and/or the like in order to produce the desired treatmentmaterials. As discussed with reference to other embodiments herein, suchsolids and/or other materials can be embedded, impregnated and/orotherwise disposed on, within or along the tip 2060, the pad 2090 (e.g.,foam), a cartridge and/or any other component or portion which is influid communication with the handpiece assembly 2000.

Another embodiment of a handpiece assembly 2100 is illustrated in FIGS.21A and 21B. The main body portion 2110 of the assembly 2100 can includea delivery conduit 2140 and a waste conduit 2150. According to someembodiments, these conduits 2140, 2150 are routed along an interior ofthe main body portion 2110. However, one or both of these conduits canbe positioned along the outside of the handpiece assembly 2100, asdesired or required. Further, a removable tip 2160 can be configured tobe secured along the distal end of the main body portion 2110.

With continued reference to FIGS. 21A and 21B, the tip 2160 can includea delivery zone 2182 or region and a waste zone 2190 or region. Asshown, these zones 2182, 2190 can be separated by a septum 2186 or othermember or feature. According to some embodiments, treatment fluidsand/or other materials, such as, for example, human growth factors,cytokines, soluble collagen, antioxidants, matrix proteins, serums,salicylic acid, other anti-acne acids and materials, microcapsules,capsules, other time-release products and substances, water (e.g.,distilled, tap water, filtered, etc.), saline, other dilutants ordissolvents, vitamins, chemical exfoliation agents, lotions, soothingagents, brightening or lightening agents (e.g., kojic acid), peptides,peeling agents, acids, anesthetics, medicants, other non-active oractive compounds, other fluids or materials, combination or mixturesthereof and/or any other substances, are selectively transferred to thedelivery zone 2182 via the delivery conduit 2140. Such fluids and/orother materials can originate from a cartridge (e.g., located within thehandpiece assembly 2100, positioned upstream of the handpiece assembly2100, etc.), a bottle or other container included as a part of amanifold system and/or any other source.

Alternatively, the delivery conduit 2140 can be configured to transferonly water, saline, other dilutants or dissolvents and/or otherrelatively clean fluids (e.g., fluids that have no solids or a lowconcentration of solids). In such configurations, as discussed ingreater detail herein with reference to other arrangements, solids,semi-solids, granular materials, gels, concentrated solutions and/orother materials configured to be combined with the water, saline orother fluids being conveyed through the delivery conduits 2140 can bepositioned within or near the delivery zone 2182. Thus, once water,saline and/or other fluids contact such materials, the desired orrequired treatment materials can be produced in the delivery zone 2182and brought to the skin surface being exfoliated.

With further reference to FIGS. 21A and 21B, exfoliated skin, spentfluids and other treatment materials, debris and other waste materialscan be removed from the tip 2160 to the waste conduit 22150 through thewaste zone 2190. According to some embodiments, one or both of the zones2182, 2190 include a pad or other member. For example, the delivery zone2182 can include a pad or other member to help distribute the treatmentfluids more evenly to the adjacent skin surface. In other arrangements,the pad or other member positioned within the delivery zone 2182 issaturated with or otherwise provided with solids, gels and/or othermaterials that can be selectively released to the skin once water orother fluids are conveyed to the delivery zone 2182. Likewise, the wastezone 2190 can include a pad or other member to help exfoliate skinand/or serve as a primary filter for the waste materials being carriedaway from the tip 2190.

FIGS. 22, 23A and 23B illustrate an embodiment of a handpiece assembly2200 configured to releasably receive a disc 2290, plate or any othermember having an abrasive element along one or more of its surfaces. Asshown, the disc 2290 can be sized, shaped and otherwise configured to besecurely positioned within an interior of the tip 2260, generallybetween the tip's main opening 2280 and the front of the adjustabledistal portion 2230 of the handpiece assembly 2200. According to certainarrangements, the disc 2290 or plate is adapted to be positioned withina recessed area (e.g., ring) located along an end surface of thehandpiece assembly (e.g., the adjustable distal portion 2230) and/or theproximal interior portion of the tip 2260 (e.g., generally below theperipheral lip 2267). In embodiments where the handpiece assembly doesnot include an adjustable distal portion, the disc 2290 can be locatedwithin a corresponding recess of the main body portion 2210 or any othercomponent of the handpiece assembly 2200.

As depicted in the cross-sectional view of FIG. 23A, the diameter orother cross-sectional dimension of the disc 2290, plate or similarmember can be larger than the opening 2280 of the tip 2260. Thus, such adesign helps ensure that the disc 2290 will remain securely positionedwithin an interior region of the tip 2260 during use. The abrasiveelements positioned on the surface of the disc 2290 can be exposedthrough one or more openings 2280 of the tip 2260. Accordingly, asdiscussed in greater detail herein with reference to other embodiments,such abrasive elements can be used to selectively abrade skin during atreatment procedure.

In some arrangements, the disc 2290, plate or other member includes aplurality of diamonds or other materials, posts, sharp edges (e.g., thespiral or other protruding portions as illustrated in FIGS. 5A, 8A-8E,9A-9F, 10A-10F and/or the like), other abrasive designs or featuresand/or any other abrasive element. As noted above, the term “abrasiveelement,” as used herein, is a broad term and includes, withoutlimitation, protruding elements, abrasive materials (e.g., grit,sandpaper-like material, other coarse materials, etc.), roughenedsurfaces, contoured surfaces, surfaces with openings, recesses or otherfeatures, brushes, blades, surfaces impregnated with diamonds or othermaterials and/or the like.

The disc 2290 can include diamonds and/or other abrasive elements on oneor both of its surfaces. In arrangements where both sides of the disc2290 include abrasive elements, the disc 2290 can be advantageouslyturned around to provide additional and/or different skin treatmentoptions. For example, one side of the disc 2290 can comprise a textureor design configured to be used during an initial treatment step, whilethe opposite side of the disc 2290 can comprise a texture or designconfigured to be used during a follow-up or polishing step. Relatedly,the discs 2290, plates or other members can be provided with varyingabrasive properties, allowing a user to quickly and convenientlycustomize the handpiece assembly 2200, as desired or required for aparticular treatment procedure. For example, the grit size, density,spacing, location and/or other characteristics of the diamonds or otherabrasive elements can vary from disc to disc.

As discussed herein with reference to other embodiments, the illustratedhandpiece assembly 2200 can include one or more delivery channels 2240and/or one or more removal channels 2250. Accordingly, the abrasive disc2290, plate or other member adapted to be positioned between the tip2260 and the distal end of the handpiece assembly 2200 can include oneor more openings 2292 to facilitate fluids (e.g., water, serums, etc.)and/or other materials to be delivered to the skin interface and wastematerials (e.g., abraded skin, spent treatment fluids, etc.) to beremoved from the skin interface. In the illustrated embodiment, the disc2290 includes only a single, centrally-located, circular opening 2292.However, in other arrangements, a disc 2290, plate or other abrasivemember can include one or more additional openings. The quantity, size,shape, location, spacing and/or other details of such openings 2292 canbe different than illustrated herein.

According to certain embodiments, the disc 2290, plate or other devicehaving an abrasive element can be selectively removed (e.g., by removingthe tip 2260 from the proximal portions of the handpiece assembly 2200).Thus, the disc or other member can be conveniently cleaned, serviced orreplaced, as desired or required. This can help improve theeffectiveness of a skin treatment procedure. In addition, suchembodiments provide a convenient way of cleaning and/or otherwisemaintaining a skin treatment system. Further, such designs can helpimprove the general efficiency of skin treatment procedures, as a systemcan be quickly cleaned and customized both between treatment procedures(e.g., different patients) and during the execution of a singletreatment procedure (e.g., changing the grit size for a patient). Aremovable disc 2290, plate or other member, as illustrated in FIGS. 22,23A and 23B and discussed above, or equivalents thereof, can beincorporated into of the embodiments disclosed herein or equivalentsthereof.

As noted above, one or more materials can be strategically embedded,impregnated, placed, stored and/or otherwise disposed on one or moresurfaces or areas of the disc 2290 and/or any other portion or componentof the handpiece assembly 2200. Such materials can comprise solids,semi-solids, other dried substances, gels, concentrated solutions and/orthe like. For example, such materials can be provided in loose form(e.g., positioned on or within the disc 2290, a recess of the disc 2290,other portion of the tip 2260, within a cartridge or other container,adhered to one or more surfaces, etc.), as a tablet, capsule, pill, discor other dissolvable solid, saturated within a foam pad or othersponge-like material and/or the like. Thus, in certain arrangements,water (e.g., distilled, tap water, filtered, etc.), saline, otherdilutants and/or other fluids which are delivered through the disc 2290,plate or other abrasive member to the tip can selectively dissolve,liquefy, melt, soften, dilute or otherwise prepare the materialsembedded, impregnated and/or otherwise positioned on the tip, within acartridge or other container and/or on or within another portion orcomponent of a skin treatment system (e.g., handpiece assembly, fluidline upstream of the handpiece assembly, etc.). Accordingly, the desiredhuman growth factors, cytokines, soluble collagen, antioxidants, matrixproteins, serums, salicylic acid, other anti-acne acids and materials,microcapsules, capsules, other time-release products and substances,water, saline, other dilutants or dissolvents, vitamins, chemicalexfoliation agents, lotions, soothing agents, brightening or lighteningagents, peptides, acids, anesthetics, medicants, other non-active oractive compounds, other fluids or materials, combination or mixturesthereof and/or any other substance can be advantageously provided to theskin surface being treated, as desired or required.

FIG. 24 illustrates one embodiment of a handpiece assembly 3010configured for use in a skin treatment system which may be used toperform one or more treatments on a person's skin. In the depictedembodiment, the handpiece assembly 3010 comprises an outer housing 3014that can be grasped or otherwise manipulated by a user. As shown, thehousing 3014 can include a curved shape. In other embodiments, theshape, size and/or other details regarding the housing 3014 can vary asdesired.

With continued reference to FIG. 24, the handpiece assembly 3010 caninclude a tip 3020 that is configured to contact or substantiallycontact the skin or other surface being treated. According to someembodiments, as illustrated in FIG. 24, the tip 3020 can be removable.Thus, the tip 3020 can be easily changed for cleaning, hygienic or otherpurposes. For example, depending on the type of skin treatment procedurebeing performed, a user can select a tip 3020 having a specific patternor features along the distal end. Non-limiting examples of the varioustypes of tips 3020 that may be attached to the handpiece assembly 3010are disclosed in U.S. patent application Ser. No. 11/392,348, filed Mar.29, 2006 and published as U.S. Patent Publication No. 2007/0156124, andU.S. patent application Ser. No. 12/362,353, filed Jan. 29, 2009 andpublished as U.S. Patent Publication No. 2009/0192442, the entireties ofboth of which are hereby incorporated by reference herein.

In arrangements where a removable tip 3020 is used, the handpieceassembly 3010 can include an interface portion 3030 along its distal endthat is configured to securely receive the tip 3020. In FIG. 24, theinterface portion 3030 comprises an O-ring 3040 or other sealing memberto help prevent or reduce the likelihood of leaks. In other embodiments,one or more other types of gaskets or similar devices can be used,either in lieu of or in addition to an O-ring 40.

With continued reference to FIG. 24, the interface portion 3030 caninclude one or more openings 3044, 3046 or ports. In some embodiments,these openings 3044, 3046 are configured to transfer fluids and/or othermaterials to and/or from the tip 3020. For example, in the depictedembodiment, the interface portion 3030 comprises two fluid deliveryopenings 3044 positioned along the periphery and one fluid suctionopening 3046 positioned along the center of the handpiece assembly 3010.In other embodiments, however, the number, location, spacing, shape,size and/or other details of the openings 3044, 3046 can vary as desiredor required.

One or more conduits 3050 can be placed in fluid communication with theopenings 3044, 3046, and thus, at least a portion of the tip 3020 of thehandpiece assembly 3010. The conduits 3050 can be configured to transfer(e.g., deliver, withdraw, etc.) fluids or other materials to and/or fromthe distal end of the handpiece assembly 3010. As shown in FIG. 24, theconduit 3050 can be positioned at least partially within an interiorportion of a handpiece assembly 3010. In the depicted embodiment, theconduit 3050 extends out of the proximal end of the handpiece assembly3010.

FIG. 25A illustrates one embodiment of a conduit 3050 that is configuredfor use in a handpiece assembly 3010. As shown, the conduit 3050 caninclude a delivery passage 3054 and a suction passage 3056. In otherembodiments, the conduit 3050 can comprise more or fewer passages, asdesired or required by a particular application or use. In addition, thesize, shape and other details of the passages 3054, 3056 can bedifferent than illustrated in FIGS. 25A and 25B. The conduit 3050 cancomprise tubing, pipe and/or the like. Further, the conduit 3050 caninclude one or more rigid, semi-rigid and/or flexible materials, suchas, for example, rubber, plastic, other polymeric materials, othersynthetic materials, metal or the like.

With continued reference to FIG. 25A, the various passages 3054, 3056 ofthe conduit 3050 can be co-molded or otherwise produced as a unitarystructure. In FIG. 25A, the passages 3054, 3056 are attached to eachother along a portion of the conduit 3050 and separated from each otheralong another portion of the conduit 3050. According to someembodiments, the conduit 3050 can be manufactured using extrusion orother production method. In other arrangements, individual passages thatconnect to the handpiece assembly 3010 are separate members that may ormay not be attached to one another. For example, in one embodiment, thepassages 3054, 3056 can comprise separate rubber tubing portions thatare joined to each other using adhesives, clips, tape, fasteners and/orone or more other attachment methods or devices. The shape, size and/orother details of the passages 3054, 3056 can be different thanillustrated herein.

FIG. 26 illustrates an exploded perspective view of the handpieceassembly 3010 of FIG. 24 with a portion of the outer housing 3014removed to reveal an interior area. As shown, an interior of thehandpiece assembly 3010 can comprise one or more tabs 3018, guides,other fasteners and/or other members that are shaped, sized andotherwise configured to receive and secure one or more conduits 3050extending within the assembly 3010. By way of example, in FIG. 26, asmall portion of a conduit 3050 is shown (in phantom) within one of thetabs 3018. In the illustrated embodiment, the handpiece assembly 3010includes a total of two tabs 3018. However, the quantity, type, shape,size and/or other details of the tabs 3018 or other members can vary.Further, the proximal end of the handpiece assembly 3010 can comprise anopening 3016 or other slot through which a conduit 3050 and/or otheritems can extend.

With continued reference to FIG. 26, the interface portion 3030 of thehandpiece assembly 3010 can include one or more ports 3034, 3036 thatare configured to attach to passages 3054, 3056 of a conduit 3050. Forexample, in FIG. 26, the delivery passage 3054 is shown (in phantom) asbeing associated with a first port 3034 and the suction passage 3056 isshown (in phantom) as being associated with a second port 3036. In otherembodiments, a handpiece assembly 3010 comprises more or fewer ports, asdesired or required. In addition, the size, shape, type and/or otherdetails of the ports can vary. In some embodiments, once the tubing 3050is properly secured to the ports 3034, 3036 of the handpiece assembly,the delivery passage 3054 can be placed in fluid communication with theone or more delivery openings 3044. Likewise, the suction passage 3056can be placed in fluid communication with the one or more suctionopenings 3046. Consequently, one or more fluids or other materials canbe selectively transferred (e.g., delivered to and/or removed from) thetip 3020 of the handpiece assembly 3010.

As illustrated in FIG. 26, the assembly 3010 can be configured such thata single port 3036 can be in fluid communication with two or moreopenings 3046 located along a distal surface of the interface portion3030. In other embodiments, a single opening along the distal surface ofthe interface portion 3030 can be in fluid communication with two ormore ports. Thus, the interface portion 3030 can include one or moreinternal channels, flow splitting devices, flow control valves and/orany other devices or features that can selectively affect the flow offluids therethrough. This can apply to delivery and/or suction ports andopenings, as desired or required by a particular application.

The use of a conduit 3050 that extends within an interior cavity of thehandpiece assembly 3010 can provide one or more advantages or benefits.For example, such designs can permit a user to easily remove, attach orreplace a conduit 3050 between or during a treatment or procedure. Inaddition, contamination of an interior of the handpiece assembly 3010can be reduced or eliminated because fluids or other substancestransmitted through the handpiece assembly 3010 are fully containedwithin the passages 3054, 3056 of the conduit 3050.

FIG. 27 schematically illustrates one embodiment of a skin treatmentsystem 3006A. The depicted treatment system 3006A comprises a handpieceassembly 3010, a conduit 3050, a fluid transfer device 3070 (e.g., pump)in fluid communication with the conduit 3050 and a canister 3100 orother container. As shown, the handpiece assembly 3010 can include a tip3020 that is adapted to contact and treat the skin S. A conduit 3050having a delivery passage 3054 and a suction (e.g., removal) passage3056 can be attached to the handpiece assembly 3010 and placed in fluidcommunication with the tip 3020. In addition, a pump 3070 or other fluidtransfer device can be placed in fluid communication with the conduit3050 (e.g., the suction passage 3056) to assist in transferring fluidsor other materials to and/or from the tip 3020.

With continued reference to FIG. 27, the canister 3100 or othercontainer can comprise a storage compartment 3104 and a wastecompartment 3106. In other arrangements, the canister 3100 can includemore or fewer compartments, as desired or required. For example, thecanister 3100 can include two or more storage compartments, each ofwhich is configured to store a different fluid and/or other treatmentmedia. In some embodiments, the canister 3100 comprises a unitarystructure having one or more baffles 3105 or other dividing members tocreate two or more separate compartments 3104, 3106. However, in otherembodiments, the system 3006A comprises two or more separate canistersthat are not part of a unitary structure or that are not attached toeach other.

In FIG. 27, when the tip 3020 is placed against the surface of the skinS to be treated, a pump 3070 or other fluid transfer device can be usedto draw a treatment media (e.g., water, saline, other fluids, othermaterials, etc.) from the storage compartment 3104 and through thedelivery passage 3054. At the same time, the pump 3070 can remove wastematerials from the treatment surface to the waste compartment 3106 viathe suction passage 3056. In other embodiments, one or more othermethods and/or devices for delivering and/or withdrawing fluid or othermaterials to and/or from the distal end of the handpiece assembly 3010can be used.

As illustrated in FIG. 28, a handpiece assembly 3010 and a conduit 3050of a treatment system 3006B can be placed in fluid communication with acanister 3100. The illustrated canister 3100 comprises a base 3101 andone or more compartments 3104, 3106. As discussed, the canister 3100 caninclude one or more storage compartments 3104 and/or waste compartments3106 that are separated by a baffle 3105 or other separation member. Thevarious compartments 3104, 3106 can be placed in fluid communicationwith one or more passages 3054, 3056 of the conduit 3050 to selectivelytransfer fluids and/or other materials to and/or from a handpieceassembly 3010. In addition, the system 3006B can include a pump or otherfluid transfer device (not shown). For example, in one embodiment, apump is placed within or near the base 3101. In other arrangements, thepump is positioned in one or more other locations (e.g., external to thebase 3101).

With continued reference to FIG. 28, the canister 3100 can include a lid3102 or other cover member that permits a user to selectively access theinterior of the compartments 3104, 3106 for filling, emptying, cleaningand/or any other task. In some embodiments, the lid 3102 comprises ahinge 3110 or other device that facilitates accessing the interior ofthe various compartments 3104, 3106.

Another embodiment of a canister 3200 is illustrated in FIG. 29A. In thedepicted arrangement, the canister 3200 comprises a storage compartment3204 and a waste compartment 3206. As discussed, however, in otherembodiments, the canister 3200 can comprise more or fewer compartments,as desired or required. The compartments 3204, 3206 can be separated bya baffle 3205 or another separation member. In addition, the canistercan include a removable lid 3202 that permits a user to access theinterior of the compartments 3204, 3206. In FIG. 29A, each compartment3204, 3206 comprises a fitting 3214, 3216 or similar member to whichconduits or passages 3054, 3056 of a conduit (e.g., tubing, pipe, etc.)can attach. Thus, the conduit can be placed in fluid communication withthe various compartments 3204, 3206 of the canister 3200. In otherembodiments, the fittings 3214, 3216 or ports can be located in one ormore other locations of the canister 3200 (e.g., the bottom, side,etc.).

A different embodiment of a canister 3200A is illustrated in FIG. 29B.As with other embodiments, the illustrated canister 3200A comprises asupply compartment 3204A and a waste compartment 3206A that areseparated by a baffle 3205A or other member. As shown, the canister3200A can comprise a base 3201A and a lid 3202A or other cover member.In addition, the compartments 3204A, 3206A can comprise one or moreinternal channels or conduits 3274A, 3276A that facilitate in thetransfer of fluids or other materials into and/or out of the canister3200A. In some embodiments, the canister 3200A is configured to movefluids to and from a handpiece assembly 3010 in a manner similar to whatis schematically described in FIG. 27.

FIG. 3030 illustrates a handpiece assembly 3310 according to anotherembodiment. In the depicted arrangement, the handpiece assembly 3310comprises a main body portion 3314 and a tip 3320 that is configured tocontact and treat the skin. In addition, in the illustrated embodiment,the proximal end 3311 of the assembly 3310 includes a canister 3400.Thus, unlike other arrangements disclosed herein, the depicted canister3400 is physically attached to and incorporated into the handpieceassembly 3310. In one embodiment, the canister 3400 can be separatedand/or attached to the main body portion 3314 of the handpiece assembly3310 by manipulating a release tab 3401, button or other feature. One ormore gaskets, O-rings or other members (not shown) can be positionedbetween the main body portion 3314 and the canister 3400 in order toreduce the likelihood of leaks.

Accordingly, a user can easily and conveniently handle and manipulatethe handpiece assembly 3310 illustrated in FIG. 3030 (or variationsthereof) because the canister 3400 and the main body portion 3314 of theassembly 3310 are self contained within a single structure. In someembodiments, the handpiece assembly 3310 includes an internal pump orother fluid transfer device within its main body portion 3314.Alternatively, a fluid transfer device and/or any other component can bepositioned outside of the handpiece assembly 3310 and/or at any otherlocation. Such components can be attached to or separate from thehandpiece assembly, as desired or required.

FIG. 31 illustrates one embodiment of a canister 3400 configured for usewith a self-contained handpiece assembly 3310 such as the one asillustrated in FIG. 30. As shown, the canister 3400 can comprise adelivery compartment 3404 in which one or more treatment fluids or othermaterials can be placed. In addition, the canister 3400 can comprise awaste compartment 3406 to which fluids, exfoliated skin and/or othersubstances withdrawn from the treatment surface can be directed. As withother embodiments disclosed herein, the canister 3400 can comprise abaffle 3405 or other separation member. In other embodiments, completelyseparate canisters can be attached to the proximal end of the handpieceassembly 3310 (e.g., one or more delivery canisters, a waste canister,etc.).

With continued reference to FIG. 31, the canister 3400 can comprise oneor more ports 3414, 3416 or other fittings through which fluids or othersubstances can be transferred (e.g., between the tip 3320 and thecanister 3400). According to some embodiments, the canister 3400 isconfigured to lock to the main body portion 3314 using one or moredevices or methods, such as, for example, locking tabs, clasps, magneticconnectors, other fasteners and/or the like.

Any of the embodiments of a handpiece assembly disclosed herein cancomprise a tip that swivels, rotates and/or otherwise moves relative toa main body portion. Such a feature can facilitate moving andmanipulating a handpiece assembly along a person's skin surface during atreatment procedure. This can be particularly significant when thetreatment surface is highly contoured.

In the embodiment illustrated in FIG. 32, a handpiece assembly 3510comprises a joint 3515, hinge or other movement mechanism (e.g., balljoint or mechanism, swivel joint or mechanism, etc.). In the illustratedarrangement, the joint 3515 is generally located between the tip 3520and the main body portion 3514 of the handpiece assembly 3510. Asillustrated in phantom, such a joint 3515 or other mechanism canadvantageously permit a tip 3520 to be moved relative to the adjacentbody portion 3514. For example, in some embodiments, the body portion3514 can be moved relative to the tip 3520 between a first position3514A and a second position 3514B. In some embodiments, the passages ofa conduit (not shown) are configured to pass through the joint 3514(e.g., for passages to be in fluid communication from the main bodyportion 3514 to the tip 3520 through the joint 3515) to permit fluids orother materials to be transferred to and/or from the working surface3522 of the tip 3520 during the operation of the handpiece assembly3510.

With respect to any of the embodiments discussed and/or illustratedherein, the handpiece assembly, pump or other fluid transfer deviceand/or any other component of the skin treatment system can be poweredusing one or more power sources. For example, in some embodiments, abattery (e.g., disposable, rechargeable, etc.), an AC power source(e.g., with or without a transformer) or any other power device orsource can be connected, attached or otherwise supplied to the desiredcomponent or subcomponent of the treatment system. In addition, thevarious components or subcomponents can include one or more controllers,electrical and/or instrumentation connections, ports and/or the like, asdesired or required for the proper operation of the treatment system.

According to one embodiment, the self-contained handpiece assembly 3310illustrated in FIG. 30 is configured to include a rechargeable battery.The handpiece assembly 3310 can be sized, shaped and otherwiseconfigured to be placed in a docking station when not in use. Thedocking station can be configured to recharge the battery of theassembly 3310. In other embodiments, however, a handpiece assembly canbe powered by AC or DC power (e.g., connected to a power cable or thelike).

FIG. 33 illustrates one embodiment of a cartridge 3500 containing aserum and/or another fluid or material used during a skin treatmentprocedure. As shown, the cartridge 3500 can comprise a membrane 3504 orother member to seal or substantially seal the internal contents of thecartridge 3500. In addition, the cartridge 3500 can include a lockingear 3506 or other feature or member that is configured to mate with acorresponding portion of the handpiece assembly. In some embodiments,such a locking ear 3506 is sized, shaped and otherwise configured toalign with a slot or other opening in a docking area of the handpieceassembly. Once the locking ear 3506 or other feature is properly alignedwith and pushed into a corresponding recess or other portion of thehandpiece assembly, the cartridge 3500 can be rotated or otherwise movedto secure it to the handpiece assembly. In other arrangements, acartridge includes two or more locking ears 3506 or other features thatare configured to mate with corresponding areas or portions of thehandpiece assembly.

With further reference to FIG. 33, the cartridge 3500 can include anO-ring 3502 or other sealing member to help prevent fluids and/or othersubstances from leaking once the cartridge 3500 is properly insertedwithin the handpiece assembly. In the illustrated embodiment, thecartridge 3500 comprises a generally cylindrical body with a relativelynarrow neck portion. However, it will be appreciated that the shape,size and/or any other details or characteristics of the cartridge 3500can be different than illustrated and discussed herein to suit aparticular application or use.

FIG. 34 illustrates a cross-sectional view of a docking portion or area3510 of a handpiece assembly with a cartridge 3500 being securedtherein. As illustrated, the docking area 3510 of the handpiece assemblycan include a hollow tube 3516 or other puncturing member that isconfigured to penetrate the membrane 3504 when the cartridge 3500 issecurely positioned within the docking area 3510. As discussed, in orderto prevent or reduce the likelihood of leaks, the nozzle of thecartridge and/or the docking area 3510 can comprise an O-ring 3502and/or another sealing member.

According to some embodiments, once the membrane 3504 is punctured, theinternal contents of the cartridge 3500 can be in fluid communicationwith the tip (not shown) of a handpiece assembly. Thus, the hollow tube3516 or other penetrating member can access the internal contents of thecartridge 3500 so they can be transferred through the body of thehandpiece assembly to a working surface (e.g., tip). The fluids and/orother substances can be conveyed to a tip or other working surface ofthe handpiece assembly by gravity flow, using a pump or other fluidtransfer device and/or the like. In some arrangements, as illustrated inFIG. 33, the cartridge 3500 includes a locking member 3506 (e.g., tab)that is configured to mate with a corresponding portion of the dockingarea 3510 when properly inserted therein.

The membrane 3504 of the cartridge 3500 can include any flexible,semi-rigid or rigid materials that is adapted to be punctured by ahollow tube 3516 or other member when the cartridge 3500 is secured to ahandpiece assembly. In some embodiments, the membrane comprises rubber,plastic and/or the like. In addition, the membrane 3504 can beconfigured to be re-sealable once the cartridge 3500 is removed from thehandpiece assembly.

FIGS. 35-37 illustrate another embodiment of a handpiece assembly 3600adapted to treat the skin. The depicted assembly 3600 comprises a mainbody portion 3602, a working tip 3604 and a docking area or port 3605 inwhich a cartridge 3610 and a waste canister 3620 can be inserted. Such ahandpiece assembly 3600, as with other embodiments disclosed herein, canbe an all-inclusive assembly that eliminates or reduces the need forother separate components. For example, the main body portion 3602 cancomprise a vacuum pump or other fluid transfer device (not shown) tohelp deliver fluids and other treatment materials to the working tip3604 and remove waste fluids, exfoliated skin and/or other materials tothe waste canister 3620.

With reference to FIG. 36, the handpiece assembly 3600 can include adocking port or area 3605 that is configured to receive a cartridge3610. The cartridge can include one or more treatment fluids, substancesor the like. In some embodiments, as discussed herein with respect tothe embodiment illustrated in FIG. 33, the cartridge 3610 comprises amembrane (not shown in FIG. 36) that is configured to substantially sealthe internal contents of the cartridge 3610. The docking area 3605 caninclude a puncturing member 3606 (e.g., hollow tube, syringe, needle,etc.) that is sized, shaped, positioned and otherwise configured tobreak the membrane or seal so that the contents of the cartridge 3610can be placed in fluid communication with the main body portion 3602 andthe tip 3604 of the handpiece assembly 3600. The cartridge 3610 anddocking area 3605 can include one or more mating features (e.g.,threads, locking tabs, snap connections, other mechanical fasteners,etc.) to ensure that the cartridge 3610 is secured to the handpieceassembly 3600 during use.

As illustrated in the cutaway cross-sectional view of FIG. 36, thedocking area 3605 can be shaped, sized and otherwise configured toreceive a nozzle 3612 or other protruding member of the cartridge 3610.Accordingly, the hollow tube 3606 or other puncturing member of the mainbody portion 3602 can penetrate a membrane or other sealing memberdisposed along the end of the nozzle 3612 once the cartridge 3610 issecured within the docking area 3605. In order to prevent or reduce thelikelihood of leaks of fluids and/or other substances contained withinthe cartridge 3610, the nozzle 3612 can comprise one or more O-rings3614 or other sealing members.

The handpiece assembly 3600 illustrated in FIGS. 35-37 includes agenerally rectangular shape. However, in other embodiments, the shape,size and/or other characteristics or properties of the handpieceassembly 3600 can vary, as desired or required by a particularapplication or use.

FIG. 37 illustrates one embodiment of a waste canister 3620 that isconfigured to attach to a proximal end of the handpiece assembly 3600.The waste canister 3620 can be configured to collect exfoliated skin,used serums and other fluids and/or the like that are drawn away from aperson's skin during treatment. As shown, the waste canister 3620 cancomprise a port 3622 that is adapted to engage and secure to one or morereceiving areas of the main body portion 3602 of the handpiece assembly3600. As with the cartridge 3610, the waste canister 3620 can includeone or more mating features with the adjacent portion of the handpieceassembly 3600. Further, one or more O-rings 3622 or other sealingmembers can be used to prevent or reduce the likelihood of leaks betweenthe waste canister 3620 and the main body portion 3602 of the handpieceassembly 3600.

With continued reference to FIG. 35, the handpiece assembly can includea port 3608 or other connection for a power source or other electricalconnection. In some embodiments, the port 3608 is configured to receivean AC adapter or transformer (e.g., 12 volt charger). In otherembodiments, the handpiece assembly 3600 comprises a rechargeablebattery or other power source (not shown) which may be recharged via theport 3608.

FIGS. 38-40 illustrate another embodiment of a handpiece assembly 3700that comprises, among other things, a main body portion 3702, a workingtip 3704 and a docking area 3705 for receiving a cartridge 3720. Asshown in FIG. 39, the cartridge 3720 can comprise a locking ear 3722 orother protruding member that is sized, shaped and otherwise configuredto help mate and secure the cartridge 3720 to the docking area 3705. Forexample, the docking area 3705 can include a recess 3706 (e.g., turnlock feature) that is adapted to receive the locking ear 3722 or othermember of the cartridge 3720. Once the cartridge 3720 is aligned withand inserted into the recess 3706, it can be rotated or otherwise movedto temporarily secure the cartridge 3720 to the main body portion 3702of the assembly 3700.

When the contents of the cartridge 3720 have been emptied and/or when auser wishes to use fluids and/or materials contained with a differentcartridge 3720, the process by which the cartridge 3720 was securedwithin the docking area 3705 can be reversed. For example, the cartridge3720 can be rotated so that the locking ear 3722 or other protrudingmember generally aligns with the recess 3706 to permit the cartridge3720 to be removed. As with other embodiments, the illustrated cartridge3720 can include an O-ring 3726 or other sealing member to prevent orreduce the likelihood of leaks.

With continued reference to FIGS. 38-40, for aesthetic, ease of handlingand/or any other reason, the handpiece assembly 3700 can include atapered shape. As with any other embodiments disclosed herein, orvariations thereof, the handpiece assembly 3700 can be designed withfinger grips or other features that facilitate a user to grip andmanipulate the handpiece assembly 3700 during use. In addition, theouter surface of any of the embodiments of the handpiece assembliesdiscussed and/or illustrated herein (or variations thereof) can compriseone or more durable materials that are configured to withstand theelements to which they may be exposed. In some embodiments, the exposedsurfaces of a handpiece assembly comprise plastics, metals (e.g.,stainless steel) and/or the like.

With continued reference to FIG. 40, the handpiece assembly 3700 can beplaced in fluid communication with a housing 3740 and a waste canister3730 via one or more conduits 3710. As shown, the housing 3740 canreceive a removable waste canister 3730 along its upper surface.Alternatively, the housing 3740 can be adapted to receive one or morewaste canisters 3730 at any other portion or location. In someembodiments, the canister 3730 can be advantageously removed from thehousing 3740 for emptying, cleaning and/or any other purpose. As withother embodiments disclosed herein, the housing 3740 can comprise aninternal and/or external pump or other fluid transfer device. Such afluid transfer device can be used to remove waste fluids and/or othermaterials away from the tip 3704 of the handpiece assembly 3700 (e.g.,via a waste conduit 3710), and in some arrangements, simultaneously drawtreatment serums and other fluids from the canister 3720 toward the tip3704 of the handpiece assembly 3700.

The pump, other fluid transfer device and/or any other electriccomponent or features of the system can be operated by one or more powersources (e.g., AC, DC, rechargeable or disposable batteries, etc.). Inaddition, the handpiece assembly 3700 and/or the housing 3740 caninclude buttons, dials and/or other members that permit a user toselectively control the operation during a treatment procedure.

FIGS. 41A and 41B illustrate another embodiment of a handpiece assembly3800 configured for use in a skin treatment system. Like in otherembodiments disclosed herein, the depicted handpiece assembly 3800comprises a main body portion 3802, a removable tip 3810 and a receivingor docking area 3805 for securely receiving a cartridge 3820. As shown,the main body portion 3802 of the handpiece assembly 3800 can comprise aport 3807 to which a conduit 3830 or other channeling member mayconnect. According to some embodiments, the conduit 3830 is placed influid communication with a vacuum pump or other fluid transfer device(not shown) for removing waste materials away from the treatment surface(e.g., tip 3810).

As noted above, a handpiece assembly can comprise one or more valves3822 or other flow control members or features to regulate the deliveryof fluids and/or other materials toward the tip. One embodiment of ahandpiece assembly 3800′ having such a valve 3822′ is illustrated inFIG. 42. The inclusion of such a valve or other flow control device orfeature can permit a user to adjust the delivery of serums and/or otherfluids or materials toward the tip 3810′ by operating a handle or tab3823′ of the valve. As shown in FIG. 42, the handle or tab 3823′ can beconfigured to rotate or otherwise move within a corresponding slot 3824′of the handpiece housing. In some embodiments, the handle or tab 3823′is resiliently biased (e.g., in the fully open position, in the fullyclosed position, an intermediate position, etc.), as desired orrequired. According to some arrangements, the valve comprises a needlevalve or other valve assembly that is positioned within the main bodyportion 3802′. Such a needle valve with an external handle or controllercan be incorporated into any of the embodiments disclosed herein. Thedelivery of fluids and/or other materials from the cartridge 3820′ tothe tip 3810′ can be controlled using one or more other types of valvesor features. For example, in one embodiment, the flow of fluids and/ormaterials toward the tip can be regulated by rotating the cartridge3820′ relative to the main body portion 3802′. Thus, in sucharrangements, flow control can be established in a similar way asdescribed herein with reference to, inter alia, the embodimentillustrated in FIGS. 1-4B.

As discussed herein in reference to other arrangements, the cartridge3820 can include a nozzle portion with a locking ear 3826 or otherprotruding member that is configured to engage and mate with acorresponding slot 3806, recess and/or other feature of the docking area3805. Further, the nozzle of the cartridge 3820 can include an O-ring3828 or other sealing member to prevent or reduce the likelihood ofleaks when fluids and/or other substances are being transferred from thecartridge 3820 to the tip 3810. In some embodiments, the end of thenozzle portion of the cartridge comprises a membrane or other member(not shown) that can be punctured or otherwise compromised by a hollowtube 3808, spike or other member when the cartridge 3820 is securedwithin the docking area 3805.

Another embodiment of a skin treatment system 3900 comprising ahandpiece assembly 3910, a replaceable cartridge 3920 and a separatebase member 3940 is illustrated in FIG. 43A. As shown, the handpieceassembly 3910 can comprise a main body portion 3912 to which a cartridge3920 and a removable tip 3970 can be secured. In addition, the handpieceassembly 3910 can include a port 3917 that is used to place thehandpiece assembly 3910 in fluid communication with the base member 3940via one or more conduits 3930. As with other embodiments disclosedherein, the cartridge 3920 can be selectively secured to and/or removedfrom the main body portion 3912 of the handpiece assembly. Thus, thecartridge 3920 can include one or more locking ears, O-rings and/or thelike.

In addition, the base member 3940 can include a waste canister orcontainer 3960 that is adapted to receive waste fluids and othersubstances. As with the cartridge 3920, the waste canister 3960 can beconfigured to be selectively secured to and/or removed from the basemember 3940 for emptying, cleaning, replacement and/or any otherpurpose.

Further, in some embodiments, the base member 3940 comprises one or morecontrols (e.g., ON-OFF switches, other switches, knobs and/or the like)for regulating the operation of the system. As shown, a power supply orother electrical connection 3950 can be used to power the base member3940, a vacuum pump or other fluid transfer device contained within thebase member 3940 (or any other portion of the system) and/or any otherelectrical component or subcomponent of the system. Further, the basemember 3940 can comprise a recessed area 3946 along its lower portionwhich is configured to receive one or more conduits 3930, power cablesand/or the like.

FIGS. 43B and 43C illustrate different views of one embodiment of aremovable tip 3970 configured for placement on a handpiece assembly asdisclosed herein. As shown, the tip 3970 can include a tip body portion3973 and a tip skirt portion 3972 extending along the bottom of the tipbody portion 3973. The skirt portion 3972 can include a plurality ofgripping members or other features (e.g., recesses, protrusions, etc.)to facilitate the handling of the tip 3970.

A tip can be configured to slidably connect to the distal end and/or anyother portion of a handpiece assembly. For example, in some embodiments,the tip can be press fit onto the handpiece assembly. One or moreO-rings or other sealing members can be used between adjacent surfacesof the tip and the handpiece assembly to prevent or reduce thelikelihood of undesirable leaks. In other embodiments, a tip can besecured to a handpiece assembly using any other method or device, suchas, for example, a threaded connection, interlocking tabs, flanges orother members, other fasteners and/or the like. In still otherarrangements, the tip can be permanently or semi-permanently attached tothe handpiece assembly.

In the embodiment illustrated in FIGS. 43B and 43C, the tip 3970comprises one or more surfaces, elements and/or features along itsdistal end 3971 that are configured to treat (e.g., exfoliate) skin.Such tips can include one or more treatment elements, either in additionto or in lieu of abrasive elements. As used herein, “abrasive element”is a broad term and includes, without limitation, protruding elements,abrasive materials (e.g., grit, sandpaper-like material, other coarsematerials, etc.), roughened surfaces, contoured surfaces, surfaces withopenings, recesses or other features, brushes, blades, surfacesimpregnated with diamonds or other materials and/or the like. Further,as used herein, “treatment element” is a broad term and includes,without limitation, an abrasive element, massage elements or features,elements or features configured to moisturize or apply one or moretreatment agents or fluids, polishing or soothing elements or featuresand/or the like. As discussed, any embodiments of a tip for a handpieceassembly can comprise one or more treatment elements and/or abrasiveelements, as desired or required by a particular application.

As illustrated in FIGS. 43A and 43B, the tip 3970 can include a lip 3977or other ridge member along its outer periphery. The lip member 3977 cangenerally define the periphery of the distal end 3971 of the tip 3970.In some embodiments, when the tip 3970 is positioned against the skin,the lip member 3977 inhibits or substantially inhibits fluids or othermaterials from escaping a space generally defined between the tip 3970and the adjacent skin surface.

With continued reference to FIGS. 43B and 43C, the tip 3970 can includea plurality of protruding members 3980 positioned along its distal end3971 and within the interior of the lip member 3977. The protrudingmembers 3980 can be posts or other cylindrically-shaped objects. In someembodiments, the protruding members 3980 comprise relatively sharpedges, which can be configured to remove skin. The protruding members3980 can have relatively sharp planing blades. The plurality ofprotruding members 3980 can ablate or roughen a plurality of smallersections of the skin being treated.

As illustrated, the outer diameter or other comparable dimension (e.g.,length, width, etc.) of the posts or other protruding members 3980 canvary. In other arrangements, the diameter and/or other dimensions of theprotruding members can be similar or substantiality similar. The postsor other protruding members 3980 can be located, spaced and otherwiseoriented along the distal end 3971 of the tip 3970 in any desired orrequired manner.

It will be appreciated that the size, shape, spacing, orientation,location and/or other properties of the protruding members 3980 can bedifferent than illustrated and disclosed herein, as desired or requiredby a particular procedure or application. As discussed herein, the lipmember 3977 of the tip 3970 can help create an enclosed space generallydefined between the distal end 3971 of the tip 3970 and the skin surfacebeing treated. Therefore, according to some embodiments, the lip member3977 extends above the top of the protruding members 3980 so that theprotruding members are within the enclosed space during a treatmentprocedure. In other embodiments, the top surface of the lip 3977 isgenerally aligned with the top surface of or below the protrudingmembers 3980.

With reference to FIGS. 43B and 43C, the tip 3970 can include aninterior delivery stem 3974 that is configured to place the distal end3971 of the tip 3970 in fluid communication with the one or moredelivery channels or other conduits located within the handpieceassembly. For example, the delivery stem 3974 can be sized, shaped andotherwise adapted to receive fluids and/or other materials from aninternal delivery channel of the handpiece assembly.

As illustrated in FIGS. 43B and 43C, the distal end 3971 of the tip 3970can include an opening 3982 through which fluids and/or other materialsconveyed by the delivery stem 3974 may exit. As shown, the opening 3982can be located at or near the center of the distal end 3971 of the tip3970. In other arrangements, a tip 3970 can include additional stems3974 and/or openings 3982. In addition, the size, shape, location and/orother details of the openings 3982 can be different than illustratedherein.

Moreover, the distal end 3971 of the tip 3970 can include one or moreoutlet openings 3984 through which exfoliated skin, spent serums, otherwaste liquids, fluids and other materials and/or the like can beremoved. In the embodiment illustrated in FIGS. 43B and 43C, the tip3970 includes two outlet openings 3984. However, more or fewer openingscan be included, as desired or required. In addition, some or all of theposts or other protruding members 3980 can be generally hollow so thatthey perform a similar function as other outlet openings 3984 of the tip3970. In other embodiments, however, some or all of the protrudingmembers 3980 are not hollow or do not include openings therethrough.

In some embodiments, once the distal end 3971 of a tip 3970 ispositioned against the skin being treated, an enclosed space can becreated between the skin surface and tip, generally along the interiorof a peripheral lip member or other ridge. Therefore, as a vacuum oranother suction source is generated in the handpiece assembly,exfoliated skin, spent serum, other fluids and/or other materials can beremoved away from the tip 3970. At the same time, the delivery stem 3974of the tip 3970 and any other conduit or space that is in fluidcommunication with it may also be subjected to a suction force.Consequently, serums, other fluids and/or other treatment materials canbe advantageously transported to the distal end 3971 of the tip 3970through one or more openings 3982. As discussed, the tip 3970 orvariations thereof can comprise any combination of treatment elementsand/or abrasive elements, as desired or required by a particularapplication.

Additional details regarding tips for any embodiments of a handpieceassembly disclosed herein can be found in U.S. patent application Ser.No. 11/392,348 (filed on Mar. 29, 2006 and published as U.S. PublicationNo. 32007/0156124) and U.S. Provisional Patent Application No.61/024,504 (filed on Jan. 29, 2008), the entireties of both of which arehereby incorporated by reference herein.

FIG. 44 illustrates another embodiment of a handpiece assembly 4000. Insome arrangements, the illustrated assembly 4000 may be particularlywell-suited to be used as a shower model. For example, the tip 4020 ofthe handpiece assembly 4000 can include a dried serum or other materialthat is configured to dissolve when coming in contact with water and/orother fluids. Thus, once in contact with water, the tip 4020 can beoperated to remove skin. For instance, water from a shower head can beused to dissolve the media situated on the tip 4020 of the handpieceassembly 4000. In some embodiments, the handpiece assembly 4000comprises an internal vacuum pump or other fluid transfer device (notshown) that is used to draw waste liquid and/or materials away from thetip 4010 toward one or more drains 4040. Such drains 4040 may or may notbe connected to a separate conduit or other collection device, asrequired or desired by a particular application.

With continued reference to FIG. 44, the handpiece assembly 4000 cancomprise a main body portion 4002 that a user can grasp and manipulateduring use. In addition, the tip 4020 can be adapted to be removablypositioned onto a raised mounting portion 4010 of the handpieceassembly. In other embodiments, however, the tip 4020 attached directlyto the main body portion 4002 of the assembly 4000.

As discussed herein with reference to FIGS. 43B and 43C, the tip 4020can comprise an outer lip 4024 or other ridge member along its outerperiphery. The lip member 4024 can generally define the periphery of thedistal end of the tip 4020. In some embodiments, when the tip 4020 ispositioned against skin, the lip member 4024 inhibits or substantiallyinhibits fluids or other materials from escaping a space generallydefined between the tip 4020 and the adjacent skin surface. Further, thetip 4020 can include a plurality of protruding members 4030 positionedalong its distal end and within the interior of the lip member 4024. Asdiscussed, the protruding members 4030 can be posts or othercylindrically-shaped objects. In some embodiments, the protrudingmembers 4030 comprise relatively sharp edges, which can be configured toremove skin. The protruding members 4030 can have relatively sharpplaning blades. Further, the tip 4020 can include one or more openings4032, 4034 through which treatment fluids, exfoliated skin, other wastematerials and/or other substances may enter or exit the working surfaceof the tip 4020. The size, shape, quantity, location, spacing and/orother details of the openings 4032, 4034 can vary, as desired orrequired by a particular application or use.

In any of the embodiments disclosed herein, including the oneillustrated in FIG. 44, the tip of the handpiece assembly can beconfigured to rotate, pivot, tilt and/or otherwise move, as desired orrequired by a particular application.

FIG. 45 illustrates a charger or docking station 4050 which can besized, shaped and configured to receive a handpiece assembly. It will beappreciated that any other embodiments of a handpiece assembly disclosedherein can be configured to be placed and stored in such a dockingstation 4050. The station 4050 can include a cavity or other receivingarea in which one or more portions of a handpiece assembly may beselectively inserted and removed. The station 4050 can be attached to apower cord 4070 or other power source so that a rechargeable batterylocated within the handpiece assembly can be charged.

Another embodiment of a skin treatment system 4100 comprising ahandpiece assembly 4110, a base member 4130 and a waste cartridge 4140is illustrated in FIGS. 46 and 47. As with other embodiments disclosedherein, the handpiece assembly 4110 can comprise a docking area in whicha cartridge 4120 can be selectively removed or attached. In somearrangements, the handpiece assembly 4110 can be secured to a basemember 4130 using one or more clips 4116, holders or other members. Thehandpiece assembly 4110 can be placed in fluid communication with awaste canister 4140 using one or more conduits 4150.

With continued reference to FIGS. 46 and 47, the waste canister 4140 canbe configured to be selectively attached to and/or removed from the basemember 4130 for emptying, cleaning and/or any other purpose. In someembodiments, the waste canister 4140 comprises a lid 4142 or other covermember. As with any other embodiments disclosed herein, the base member4130 and/or the handpiece assembly 4110 can comprise one or more buttons4132, 4134, dials and/or other control members to regulate the operationof the skin treatment system. In addition, the base member can include arecessed region 4136 can enables one or more fluid conduits 4150, powercables or other members to be conveniently coiled therearound. Further,the handpiece assembly 4110 can comprise a main body portion 31101 and atip 4118 permanently or removably secured thereto.

According to another embodiment, a handpiece assembly can be configuredto be used in a shower or in other wet or high moisture conditions.Thus, in some arrangements, the handpiece assembly is waterproof and/orwater resistant. In such embodiments, the pump or other fluid transferdevice can be driven by electrical power, by water pressure (e.g., oneor more connections to running water), by pneumatic power and/or anyother method or device. It will be appreciated that such alternativemethods or devices of operating a pump or other fluid transfer devicecan be used with respect to any other embodiment disclosed herein.

FIGS. 48 and 49 illustrate another embodiment of a skin treatment device4210 configured to be removably secured to a user's fingers during use.As shown, the device 4210 includes a main body portion 4220 having adistal end 4230. A removable tip 4250 can be selectively positionedalong the distal end 4230 of the main body portion 4220. In someembodiments, the distal end 4230 of the main body portion 4220 includesone or more supply ports 4234 that are configured to selectively delivertreatment fluids and/or other materials to the skin surface beingtreated. The supply port 4234 can protrude away from the distal end 4230of the main body portion 4220. According to some embodiments, the supplyport 4234 comprises a cylindrical tube or other type of extensionmember. Regardless of its exact shape, size, position along the device4210 and/or other characteristics, the supply port 4234 can beconfigured to mate with a corresponding portion of the removable tip4250. In order to prevent undesirable leaks when fluids and/or othermaterials are being supplied to the tip 4250, one or more O-rings 4232and/or other sealing members can be positioned near the interface of themain body portion 4220 and the tip 4250 (e.g., along the outside of theprotruding supply port 4234, as illustrated in FIG. 48).

Further, the distal end 4230 of the main body portion 4220 can includeone or more waste or vacuum ports 4236 that are configured to receivespent serums, other fluids, exfoliated skin and/or any other materialslocated along the tip-skin interface during use. As shown in FIG. 48,tubing 4260 can be used to place the supply port 4234 and/or the wasteports 4236 in fluid communication with a separate base member (e.g.,waste canisters, fluid supply containers, etc.), as discussed hereinwith reference to FIGS. 24-47. In some embodiments, the tubing 4260 canbe molded with two or more lumens 4262, 4264, each of which beingconfigured to receive either waste materials or treatment supplymaterials. In other embodiments, a treatment supply container and/or awaste canister can be directly or indirectly secured to the device 4210,as desired or required.

The removable tip 4250 can have any size, shape and/or configuration, asdesired or required by a particular application or use. For example, thetip 4250 can comprise a plurality of diamonds that are configured toabrade skin when the device 4210 is moved along a skin surface.Alternatively, the tip 4250 can include a plurality of posts, such as,for example, those illustrated in FIGS. 43B, 43C and 3044 herein oralternatives thereto. In other embodiments, the device 4210 isconfigured to receive a tip 4250 having a spiral abrading design, agenerally abrasive surface (e.g., a gritty pad, sandpaper surface, etc.)and/or any other surface configured to abrade skin. Additionalinformation regarding the various types of tips 4250 that can beselectively positioned onto and removed from the device 4210 areprovided in U.S. patent application Ser. No. 12/362,353, filed Jan. 29,2009 and published as on Jul. 30, 2009 as U.S. Patent Publication No.2009/0192442, and U.S. patent application Ser. No. 11/392,348, filed onMar. 29, 2006 and published on Jul. 5, 2007 as U.S. Patent PublicationNo. 2007/0156124, the entireties of both of which are herebyincorporated by reference herein.

With continued reference to FIGS. 48 and 49, the skin treatment device4210 can be conveniently designed to be secured to a user's hand H. Thedevice 4210 can include one or more finger holes 4228 that are sized,shaped and otherwise adapted to receive one or more fingers of a user'shand. To help maintain the device 4210 along the user's hand and togenerally help stabilize the device 4210 during use, the device 4210 caninclude one or more wings 4222, 4224 on either side of the finger holes4228 or other finger receiving portion. Although the illustratedembodiment shows the user's middle finger positioned within the fingerhole 4228, a device 4210 can be designed so that one or more otherfingers are configured to be placed within a corresponding fingerreceiving portion of the device 4210, either in lieu of or in additionto the middle finger. The finger holes 4228 or other finger receivingportion can include one or more flexible materials (e.g., elasticfabric) that conveniently permit the device 4210 to be secured to usershaving varying finger sizes.

The embodiment illustrated in FIGS. 48 and 49 offers certain advantages.For example, such a configuration allows a user to conveniently securethe device to his or her hand during use without the need to grasp thedevice. This can facilitate the treatment process, while reducingfatigue to the user resulting from a prolonged treatment procedure. Inaddition, given its simplicity, the device 4210 can be easier andcheaper to manufacture.

As discussed herein, in any of the embodiments disclosed herein, orequivalents thereof, such as, for example, those discussed herein withreference to FIGS. 1-49, one or more materials can be strategicallyembedded, impregnated, placed, stored and/or otherwise disposed on oneor more surfaces or areas of the tip or other portion or component ofthe skin treatment system. Such materials can comprise solids,semi-solids, other dried substances, gels, concentrated solutions and/orthe like. For example, such materials can be provided in loose form(e.g., positioned on or within a recess, other portion of the tip,within a cartridge or other container, adhered to one or more surfaces,etc.), as a tablet, capsule, pill, disc or other dissolvable solid,saturated within a foam pad or other sponge-like material and/or thelike. Thus, in certain arrangements, water (e.g., distilled, tap water,filtered, etc.), saline, other dilutants and/or other fluids which aredelivered to the tip can selectively dissolve, liquefy, melt, soften,dilute or otherwise prepare the materials embedded, impregnated and/orotherwise positioned on the tip, within a cartridge or other containerand/or on or within another portion or component of a skin treatmentsystem (e.g., handpiece assembly, fluid line upstream of the handpieceassembly, etc.). Accordingly, the desired human growth factors,cytokines, soluble collagen, antioxidants, matrix proteins, serums,water, saline, other dilutants or dissolvents, vitamins, chemicalexfoliation agents, lotions, soothing agents, brightening or lighteningagents, peptides, acids, anesthetics, medicants, other non-active oractive compounds, other fluids or materials, combination or mixturesthereof and/or any other substance can be advantageously provided to theskin surface being treated, as desired or required. Additionalinformation regarding such embedded or impregnated materials is providedin U.S. patent application Ser. No. 12/362,353, filed Jan. 29, 2009, theentirety of which is hereby incorporated by reference herein and made apart of the present specification.

Some or all of the embodiments disclosed herein can be particularlyuseful for less expensive and/or simpler microdermabrasion systems. Insome embodiments, such systems can target the home consumer market.

In any of the embodiments described and/or illustrated herein, orvariations thereof, treatment fluids and/or other materials can bedelivered to the tip of a handpiece assembly using one or more ways. Forexample, in some embodiments, serums or other substances can bedelivered through a supply canister or fluid bottle. Such serums,compositions, other fluids or substances can be pre mixed so that theyare delivered to the tip and the skin unmodified or substantiallyunmodified.

In other embodiments, serums, fluids, gels or other materials can be inthe form of a pack container dry granular material, viscous gels and/orthe like. Such packs can be mixed with water or some other fluid by auser to a desired concentration. In other embodiments, one or moretreatment materials can be impregnated or otherwise embedded into thetips of the handpiece assemblies. Thus, such materials (e.g., powers,solids, gels, etc.) can advantageously dissolve when they contact water,saline or some other liquid. In still other embodiments, the treatmentmaterials can be contained within a capsule, tablet or other enclosure.Such enclosures can be configured to dissolve when placed in water orsome other fluid. Therefore, in some embodiments, a user may be requiredto place a capsule, the contents of a pack or some other materials intoa canister and add water or other fluid before use.

In some embodiments, one or more serums or other substances can bedelivered to the treatment surface of a handpiece assembly to treat aparticular skin condition. For example, the system can be used to treatacne, dry or oily skin, fine lines, sun-damaged skin, other skindiseases or disorders and/or like.

In some embodiments, the serums, other materials and/or a combination ofsuch serums or other materials can be utilized for the treatment ofsubstantially most or all skin types. For example, such serums and/orother materials can be used when the handpiece assembly exfoliates skin.

In another embodiment, the serums, other materials and/or a combinationof such serums or other materials can be used during a follow-up (e.g.,secondary, tertiary, etc.) or finish treatment step. For example, suchserums and/or other materials can be used to hydrate the skin and/orlighten treat skin damage, either in lieu of or in addition toexfoliating skin. In such embodiments, the serums and/or other materialscan comprise anti-oxidants, hyaluronic acid and/or the like.

In yet other embodiments, the serums, other materials and/or acombination of such serums or other materials can be used to target acneor oily skin conditions. It will be appreciated that other serums, othermaterials and/or combinations of such serums or other materials can beused to target one or more types of skin conditions or treatments.Further, a particular treatment procedure can utilize one, two or moreof such serums or other materials during various treatment phases (e.g.,exfoliation, finish or polishing treatment, etc.).

In some embodiments, one or more kits can be developed that target aspecific type of user, skin condition, desired result and/or the like.For example, such a kit can comprise serums and/or other materials thattarget teenage acne. As discussed, the serums and/or other materialscontained in such kits can be in one or more different forms, such as,for example, liquids, gels, other fluids, powders, solids and/or thelike. In some embodiments, such serums and/or other materials can beconfigured for immediate use. Alternatively, a particular amount ofwater, saline or other liquids, other dilution or dissolving agentsand/or the like may need to be added to the serums and/or othermaterials to get them to a usable state.

In addition, depending on who the target user is (e.g., teenagers,adults, etc.) and/or how severe a particular condition is, theconcentration or strength of the serums and/or other materials can bevaried. For example, for younger users, a kit directed at acne treatmentcan comprise lower concentrations of serums and/or other materials. Byway of another example, kits comprising higher concentrations orstrengths of serums and/or other materials can be used to treat oilyskin or acne in adults. In another embodiment, a kit can be developed totarget users whose skin is generally typical (e.g., the users' skin isnot abnormally dry or oily, the users do not have excessive amount ofacne or scarring, etc.).

As discussed, the kits can include one, two or more different types oftreatment combinations. For example, a kit can comprise a firstcombination of serum(s) and/or other material(s) that is intended totarget the exfoliation of skin. The same kit may include a secondtreatment combination that can be used in a follow-up treatment to treatoily skin or the like. In other embodiments, however, a kit can comprisemore or fewer treatment combinations, as desired or required by aparticular skin treatment procedure.

According to certain arrangements, treatment materials that are providedto the skin interface during a dermabrasion procedure are configured tobe released or otherwise made available to a user's skin over apre-selected, relatively extended time period. Such time releasematerials can be provided in the form of microcapsules, other capsulesor enclosures and/or the like.

Regardless of the form in which they are provided (e.g., withinmicrocapsules or other enclosures), time-release products or materialscan be delivered to a skin surface directly through a cartridge or othercontainer. Such a cartridge can be positioned within a handpieceassembly, such as, for example, those illustrated in FIGS. 1-4C, 13A-16Band 18B herein. Cartridges or other containers containing suchtime-release materials can be provided in various locations of ahandpiece assembly, including, without limitation, a recess of the mainportion, underneath or near a removable tip and/or the like. In certainembodiments, a cartridge or other container containing one or moretime-release materials is separate from the handpiece assembly. Forexample, as illustrated in FIG. 18A, such a cartridge or other containercan be placed along a delivery line, which selectively supplies fluidsand/or other materials through the cartridge to a handpiece assembly. Inother arrangements, such as, for example, those illustrated in FIGS. 6B,7, 17 and 20A-23B herein, time-release materials can be provided to thehandpiece assembly from one or more upstream containers or other sourcesvia a delivery line. By way of example, in accordance with theconfiguration depicted herein in FIGS. 7 and 17, time-release and/orother products and substances can be placed within one or morecontainers of a manifold system. Such materials can be subsequentlydelivered through a handpiece assembly using one or more conduits to theskin area being treated.

In yet other arrangements, time-release materials are advantageouslyprovided, either alone or in combination with one or more othersubstances, within a recess, cavity or other opening or a tip or otherportion of a skin treatment system. For example, such recesses can beprovided along a distal surface of the tip, as illustrated in FIGS.12A-12C and discussed in greater detail herein. In certain embodiments,one or more time-release materials are embedded, impregnated, placed,stored and/or otherwise disposed on one or more surfaces or areas of thetip or other portion or component of the skin treatment system (e.g.,the foam pads of FIG. 19A-20B). In one embodiment, such materials areimpregnated onto a dissolvable strip or other member. Further, suchtime-release materials, which may be provided alone or in combinationwith any other materials, can comprise microcapsules, other capsules,solids, semi-solids, other dried substances, gels, concentratedsolutions and/or the like. In some arrangements, time-release materialsand/or other substances are provided in capsules (e.g., microcapsules),caps, loose form (e.g., positioned on or within a recess, other portionof the tip, within a cartridge or other container, adhered to one ormore surfaces, etc.), as a tablet, pill, disc or other dissolvablesolid, saturated within a foam pad or other sponge-like material and/orthe like.

Thus, time-release materials can be provided in solid form (e.g.,impregnated or otherwise disposed onto or near a tip of a handpieceassembly), as part of a solution being delivered to a handpiece assemblytip (e.g., in concentrated or un-concentrated form) and/or in any otherform or manner. In some embodiments, regardless of how such materials(e.g., contained within capsules, microcapsules, other releasableenclosures or containers, etc.) delivered to a person's interface, theycan be configured to release and become available to a skin surface atvarious times after delivery. Thus, by way of example, some capsules orenclosures can be configured to release their internal contents duringan initial time frame, whereas other capsules or enclosure are adaptedto release their internal contents at later time intervals.Consequently, the overall effective time period that the substancescontained in such capsules or other enclosures can be extended.Therefore, the time-release microcapsules, capsules or other enclosurescan be configured to release the media and/or other materials containedtherein at time intervals that are offset from one another. In somearrangements, the time-release materials are released after a particulartime exposure to a person's skin (e.g., in the presence of sweat, oil,etc.), air, heat, humidity, light, time and/or any other factor. In somearrangements, the offset time release of such materials can beaccomplished by varying the thickness of the microcapsules or otherenclosures.

Regardless of where the time-release materials are positioned relativeto the handpiece assembly (e.g., within a cartridge or other container,within or outside of a handpiece assembly, in a recess or other openingof a tip or other portion of a handpiece assembly, within a foam pad, ona surface of a tip or other portion of a handpiece assembly, etc.),water (e.g., distilled, tap water, filtered, etc.), saline, otherdilutants and/or other fluids can be used to selectively dissolve,liquefy, melt, soften, dilute or otherwise prepare the time-releaseand/or any other materials. Materials that can be included in suchtime-release capsules, microcapsules and/or any other enclosure include,but are not limited to, salicylic acid, other anti-acne materials, humangrowth factors, other types of growth factors, cytokines, solublecollagen, antioxidants, matrix proteins, peptides, amino acids, UVAand/or UVB sunblocks, other sunblocking agents, serums, vitamins,chemical exfoliation agents, lotions, soothing agents, skin brighteningor lightening agents, skin tightening agents, acids, anesthetics,hyaluronic acid (HA), other hydration agents, hair removal or hairgrowth suppression agents, medicaments and pharmaceuticals, othernon-active or active compounds, water, saline, other dilutants ordissolvents, other fluids or materials, combination or mixtures thereofand/or any other substance can be advantageously provided to the skinsurface being treated, as desired or required.

According to certain embodiments, time-release materials include one ormore active ingredients that target specific skin conditions or types.For instance, a time-release product used to help control skin acne caninclude salicylic acid. The salicylic acid can be provided alone or incombination with one or more other active and/or non-active ingredients(e.g., azelaic acid, topical retinoids, benzoyl peroxide, topicalantibiotics, other anti-acne materials, saline, other dilutants orfluids, soaps, hardening agents, gels, other binders, lotions,moisturizers, etc.). In other embodiments, time release materialsinclude one or more of the following, either alone or in combinationwith each other or another substance or material: salicylic acid, otheranti-acne materials, human growth factors, other types of growthfactors, cytokines, soluble collagen, antioxidants, matrix proteins,peptides, amino acids, UVA and/or UVB sunblocks, other sunblockingagents, serums, vitamins, chemical exfoliation agents, lotions, soothingagents, skin brightening or lightening agents, skin tightening agents,acids, anesthetics, hyaluronic acid (HA), other hydration agents, hairremoval or hair growth suppression agents, medicaments andpharmaceuticals, other non-active or active compounds, water, saline,other dilutants or dissolvents, other fluids or materials.

Time-release salicylic acid capsules (e.g., microcapsules) and/or anyother active or non-active ingredients included in a skin treatmentmaterial can be encapsulated within a solid binder, such as, forexample, soap or gel. Thus, when water or another fluid is added to thematerial, the treatment material can at least partially dissolve,advantageously releasing capsules onto the skin surface. The capsulescan be configured to release their internal contents at different timeintervals after being deposited on or near a person's skin.

Alternatively, as discussed in greater detail herein, such microcapsulesor other time-release materials can be provided within a cartridge,another container, a recess or other opening and/or the like. Accordingto certain embodiments, the microcapsules or other time-releasematerials are included within a binder or are provided in loose form(e.g., as a solid, within a liquid, gel, other fluid or other medium,etc.). Thus, time-release materials can be selectively delivered to theskin (or be initially present at a tip-skin interface) in one or moredifferent forms. Regardless of the exact manner in which they areprovided to a person's skin, such time-release materials can help targetcertain skin ailments or conditions (e.g., acne, eczema, psoriasis,etc.), conditions (e.g., dry skin, oily skin, etc.) and/or the like.

In some embodiments, microcapsules and/or other time-release productsdelivered to the skin surface are configured to be released or otherwisebecome available to the skin at different times from each other. Forexample, microcapsules can be adapted to release salicylic acid and/orany other active or non-active ingredients contained therein in varioustime intervals (e.g., quarter-hour, half-hour, one-hour, two-hour,three-hour, etc.). Accordingly, the desired materials can be provided toa target skin surface to have an effect on such a surface over a longerperiod of time. This can facilitate a particular treatment procedure byeffectively prolonging the overall treatment time-period. For example,in some embodiments, an acne treatment is more effective if salicylicacid is released over a targeted skin surface during a longer timeperiod (e.g., less than 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, 8hours, 10 hours, 12 hours, 24 hours, 36 hours, 48 hours, more than 48hours, etc.).

In one embodiment, time-release materials are provided to a dermabrasionsystem which is adapted to treat skin having acne or another skincondition. A handpiece assembly having an abrasive distal end, such as,for example, a tip in accordance with any of the arrangementsillustrated or otherwise disclosed herein, or equivalents thereof, canbe used to treat a skin surface of a patient. As the tip is moved acrossthe target skin area, exfoliated skin, infected waste and/or othermaterials can be advantageously removed. In addition, the treatmentsystem can be configured to selectively deposit time-release productonto the treated skin before, after and/or contemporaneously with theexfoliation process. As discussed in greater detail herein, thetime-release product can be delivered from a cartridge or othercontainer located either within a handpiece assembly or separate fromit. In some arrangements, water, saline and/or other dilutants arerequired to at least partially dissolve or otherwise release suchsubstances (e.g., from a binder, gel, solid, etc.). Salicylic acidand/or any other materials contained within the time-release product(e.g., microcapsules, other capsules, caps, etc.) and/or other materialsdelivered to the patient's skin can be advantageously released over alonger time-period so as to help prevent or reduce the likelihood ofbacterial infection, pain or discomfort, sensitivity to sunlight orother light sources and/or the like.

According to certain arrangements, time-release capsules or othermaterials containing salicylic acid and/or other skin solutions can beembedded on or near a surface of a tip using a binder. For example,glycerin soap or other base materials or hardening agents can be used tobind the time-release materials. As water, saline or other dilutants orfluids are selectively delivered to the bound materials, time-releasematerials can dissolve, allowing salicylic acid capsules to be releasedto a target area of the skin. In one configuration, the time-releasematerials comprise approximately 30% of the bound mixture by volume,while the soap or other base material and/or hardening agent comprisesthe remaining approximately 70%. In other embodiments, the volumetricratio of time-release materials to base materials and hardening agentscan be greater or less than 3:7, as required or desired (e.g., less thanapproximately 1:9, approximately 1:4, 2:3, 1:1, 3:2, 7:3, 4:1, more thanapproximately 4:1, etc.).

In any of the embodiments of a handpiece assembly disclosed herein, orequivalent thereof, one or more of the various treatment materialsand/or other substances being conveyed to the skin surface can beselectively heated. Heating of fluids and/or other material streams to adesired temperature can help enhance one or more aspects of a skintreatment procedure. For example, in some arrangements, heated fluidsand/or other materials are generally better absorbed into a skinsurface, as the skin pores may be caused to open because of the elevatedtemperature. In other embodiments, heated fluids and other materialsadvantageously stimulate improved blood circulation along the skinsurface (e.g., dermis). Further, heating of water, saline and/or otherdilutants or dissolvents can help improve the manner in which solids,granulated materials, gels, concentrated fluids and/or other materialsimpregnated or otherwise positioned on a handpiece assembly dissolve,dilute and/or otherwise transform into the desired final product.

According to some embodiments, one or more heating devices or mechanismsare positioned within or on a handpiece assembly (e.g., the main bodyportion, the adjustable distal portion, the tip, etc.). In otherconfigurations, heaters are positioned upstream of the handpieceassembly, such as, for example, on or within a cartridge or othercontainer, a cartridge holder, fluid delivery lines and/or the like.

Fluid and/or other material streams being conveyed through a handpieceassembly can be heated conductively or convectively, as desired orrequired. Adequate heating devices or systems can include resistiveheaters, other electrical heaters and/or the like. In other embodiments,heated air or other fluids can be used to thermally transfer heat tofluids and/or other materials being delivered through a handpieceassembly. In addition, such heaters can include one or more sensors,feedback loops, controllers and/or other components to help maintain thetreatment materials being delivered to the skin surface at or near adesired temperature or within a desired range.

In some embodiments, one or more serums, salicylic acid, other anti-acneacids and materials, microcapsules, capsules, other time-releaseproducts and substances, other fluids and/or substances can beselectively delivered to or near a treatment surface of a handpieceassembly to help remedy a particular skin condition. For example, thesystem can be used to treat acne, dry or oily skin, fine lines,sun-damaged skin, other skin diseases or disorders and/or like. Further,the serums, other fluids, other materials and/or mixtures thereof can becustomized to target a particular disorder, ailment, other treatable orchronic condition, skin type and/or the like.

In another embodiment, serums, medicants, other fluids, other materials,combinations thereof and/or the like are used during a follow-up step orprocedure (e.g., secondary, tertiary, polishing, etc.) or post-treatmentphase. For example, such materials and/or mixtures can be used tohydrate the skin and/or lighten treat skin damage, either in lieu of orin addition to exfoliating skin. In any such embodiments, the serums orother fluids or materials can comprise human growth factors, cytokines,soluble collagen, matrix proteins, other proteins, anti-oxidants,hyaluronic acid, medicants and/or the like.

According to certain configurations, the serums, other fluids, othermaterials and/or mixtures thereof are used to target acne, oily skin,dry skin, other skin types and/or other skin conditions, diseases orailments. Further, a particular treatment procedure can utilize one, twoor more of such serums, medicants and/or other fluids, materials orsubstances during various treatment phases (e.g., exfoliation, finish orpolishing treatment, post-treatment, etc.).

One or more kits developed to target a specific type of user, skincondition, disease or ailment, desired result and/or the like can beprovided to a user. For example, such a kit can comprise serums,salicylic acid, other anti-acne acids and materials, microcapsules,capsules, other time-release products and substances, medicants, otherfluids, other materials, mixtures thereof and/or the like that targetteenage acne. As discussed, the serums and/or other materials containedin such kits can be in one or more different forms, such as, forexample, liquids, gels, other fluids, powders, dissolvable tablets orother packs, solids and/or the like. In some embodiments, such serumsand/or other materials are configured for immediate use (e.g., by notrequiring any dilution, premixing or other preparatory steps by a user).Alternatively, a particular amount of water, saline or other liquids,other dilution or dissolving agents and/or the like may need to be addedto achieve a usable product. Kits can include one or more cartridges orother containers that are configured to be placed onto and removed froma handpiece assembly as discussed herein.

In addition, depending on who the target user is (e.g., teenagers,adults, etc.) and/or how severe a particular condition is, theconcentration or strength of the serums, medicants, other fluids ormaterials, mixtures thereof and/or the like can be selectively varied.For example, for younger users, a kit directed at acne treatment cancomprise lower concentrations of serums and/or other materials.According to another example, kits comprising higher concentrations orstrengths of serums, medicants and/or other substances can be used totreat oily skin or acne in adults. In other arrangements, a kit targetsusers whose skin is generally normal or typical (e.g., the users' skinis not abnormally dry or oily, the users do not have excessive amount ofacne or scarring, etc.).

As discussed, the kits can comprise one, two or more different types ofmedicants, other active or non-active agents, serums, other fluids,other materials, mixtures thereof and/or the like, as desired orrequired. For example, a kit can comprise a first combination ofserum(s) and/or other material(s) that is intended to be used during abasic skin exfoliation procedure. Further, a kit may include a secondtreatment combination that is used in a follow-up treatment to treatoily skin, dry skin, another skin type, a skin disease or ailment,another skin condition and/or the like. However, a kit may comprise moreor fewer treatment combinations, as desired or required by a particularskin treatment procedure.

The systems, apparatuses, devices and/or other articles disclosed hereinmay be formed through any suitable means. The various methods andtechniques described above provide a number of ways to carry out theinvention. Of course, it is to be understood that not necessarily allobjectives or advantages described may be achieved in accordance withany particular embodiment described herein. Thus, for example, thoseskilled in the art will recognize that the methods may be performed in amanner that achieves or optimizes one advantage or group of advantagesas taught herein without necessarily achieving other objectives oradvantages as may be taught or suggested herein.

Furthermore, the skilled artisan will recognize the interchangeabilityof various features from different embodiments disclosed herein.Similarly, the various features and steps discussed above, as well asother known equivalents for each such feature or step, can be mixed andmatched by one of ordinary skill in this art to perform methods inaccordance with principles described herein. Additionally, the methodswhich are described and illustrated herein are not limited to the exactsequence of acts described, nor are they necessarily limited to thepractice of all of the acts set forth. Other sequences of events oracts, or less than all of the events, or simultaneous occurrence of theevents, may be utilized in practicing the embodiments of the invention.

Although the invention has been disclosed in the context of certainembodiments and examples, it will be understood by those skilled in theart that the invention extends beyond the specifically disclosedembodiments to other alternative embodiments and/or uses and obviousmodifications and equivalents thereof. Accordingly, it is not intendedthat the invention be limited, except as by the appended claims.

What is claimed is:
 1. A microdermabrasion device for treating a skinsurface, comprising: a handpiece assembly having a distal end and aproximal end, said handpiece assembly comprising at least one deliveryconduit and at least one waste conduit; a tip configured to bepositioned along the distal end of the handpiece assembly, said tipbeing configured to contact the skin surface; a flow control device orfeature included within the handpiece assembly to regulate the flow offluids through the at least one delivery conduit; wherein the tipcomprises a lip, a first opening in fluid communication with the atleast one fluid delivery conduit and a second opening in fluidcommunication with the at least one waste conduit; at least one abrasiveelement positioned along a distal end of the tip, said abrasive elementbeing configured to selectively remove skin as the tip is moved relativeto a skin surface; wherein the first opening, the second opening and theat least one abrasive element of the tip are positioned within aninterior of an outer periphery formed by the lip; wherein the at leastone waste conduit is in fluid communication with a vacuum source toselectively remove debris away from the tip; wherein the at least onedelivery conduit is in fluid communication with the at least one wasteconduit and the vacuum source when the lip contacts a skin surface; andwherein the at least one delivery conduit is configured to selectivelydeliver at least one time-release material to the skin surface beingtreated.